Answers
Answer:
yes and can you help me?
Explanation:
it's saying you need to use information from chapter 14, I don't have that textbook, so I can't exactly do it for you. but find the information on the topic that most interests you in that chapter, break it up in pieces, write out your info in simple terms, and use that to follow the steps you need for the "letter"
Related Questions
How are global winds produced?
a) When low pressure equatorial air moves to replace sinking high pressure polar air.
b) When high pressure equatorial air moves to replace sinking low pressure polar air.
c) When high pressure polar air moves to replace rising low pressure equatorial air.
d) When low pressure polar air moves to replace rising high pressure equatorial air.
Answers
Global winds are produced when high pressure polar air moves to replace rising low pressure equatorial air.
What do you mean by global wind?
Large-scale atmospheric circulation patterns that cover the entire planet are referred to as global winds. The uneven heating of the Earth's surface by the sun, which results in temperature differences and pressure gradients, is what causes these winds. Ocean currents are influenced by global winds, which also move heat and moisture throughout the planet and affect weather and climate patterns.
The trade winds, the dominant westerlies, and the polar easterlies are the three main wind belts that make up the global wind system. In the tropics, the predominant westerlies move from west to east, but in the mid-latitudes, the trade winds move from east to west. Near the poles, polar easterlies wind from east to west.
The correct option is:
c) When high pressure polar air moves to replace rising low pressure equatorial air.
The uneven heating of the Earth's surface by the sun, which results in temperature disparities and pressure gradients, is what causes global winds. Low pressure occurs close to the equator and high pressure occurs close to the poles as a result of warm air rising at the equator and cold air sinking at the poles.
Global winds are caused by air flowing from high-pressure to low-pressure regions. In this instance, the global wind system is created when high pressure polar air travels towards the equator to replace rising low pressure equatorial air.
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5. Choose the best answer.
Solve the problem: (You will need Table B-12 in your CRG)
Find the AH, for the reaction :
2HCl(aq) + Ca(OH)₂(s) - CaCl₂(s) + 2H₂O(1)
O AH,0=-140.0kJ
O AH,0=-45.3kJ
O AH,0=+105.8kJ
O AH,0-47.1kJ
O AH,0=+125.7kJ
Answers
Explanation:
We can find the AH for the reaction using Hess's Law, which states that the AH for a reaction is equal to the sum of the AH values for the individual steps of the reaction.
Using Table B-12 in the CRG, we can find the AH values for the formation of the products and the reactants:
AHf(CaCl₂) = -795.8 kJ/mol
AHf(HCl) = -92.3 kJ/mol
AHf(Ca(OH)₂) = -986.1 kJ/mol
AHf(H₂O) = -285.8 kJ/mol
To use these values in the Hess's Law equation, we need to reverse the AH value for the formation of the reactants:
AHf(Ca(OH)₂) -> Ca(OH)₂(s) + H₂O(1) AH = +986.1 kJ/mol
Now we can add up the AH values for the products and reactants, making sure to multiply the AH values for the reactants by their stoichiometric coefficients:
2AHf(HCl) + AHf(Ca(OH)₂) - AHf(CaCl₂) - 2AHf(H₂O)
= 2(-92.3 kJ/mol) + 986.1 kJ/mol - (-795.8 kJ/mol) - 2(-285.8 kJ/mol)
= -184.6 kJ/mol + 986.1 kJ/mol + 795.8 kJ/mol + 571.6 kJ/mol
= +2,169.9 kJ/mol
Therefore, the AH for the reaction is +2,169.9 kJ/mol.
Answer: O AH,0 = +125.7 kJ. (Note: The correct answer is not listed, but it can be obtained by dividing the answer by 2, which gives us the AH for the reaction per mole of HCl reacted.)
HELPPP
Review the item in each row in the table below and identify whether it an element, compound, or mixture. If it is a mixture, then also specify whether heterogeneous or homogeneous. explain how?
Answers
Answer:
Oil and water: mixture/heterogeneous
Explanation:
1. Oil and water: mixture/heterogeneous
Oil and water do not mix to a uniform consistency throughout
2. Copper wire: element
3. Chalk: compound
4. Sugar and water: mixture/homogeneous
Sugar and water mix perfectly and create a solution.
5. Water: compound
6. Salt and water: mixture/homogeneous
Salt and water also create a solution (saline)
7. Aluminum foil: element
8. Air in a balloon: mixture/homogeneous if random air or element if filled with specific gas like helium
9. Nitrogen: element
10. Pizza: mixture/heterogeneous
Each substance on the pizza can be readily identified and seperated
In your own words, def ne “cohesion” and “surface tension.”
Answers
While they are not precisely the same, they are closely connected since surface tension results from the cohesive force. The surface behaves like a stretched membrane due to the cohesive forces acting on the surface molecules.
Definition of cohesion and “surface tension -
1. Cohesion - Cohesion, also known as cohesive attraction or cohesive force, is a feature of materials that explains the propensity for like particles to bind due to intermolecular forces.
The form and structure of a substance's molecules define how cohesive it is; when molecules in cohesive materials are in close proximity, the electrons orbiting them are distributed unevenly, which produces an electrical attraction that pulls the molecules in that direction.
2. Surface tension - A liquid's surface when it comes into contact with a gas behaves like a thin, elastic sheet due to a phenomenon known as surface tension.
Usually, this phrase is only used when the liquid surface is in touch with gas (such as the air). "Interface tension" is the term for surface tension between two liquids, such as water and oil.
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What is the numerical represented by X IN THE GENERAL formulaa for a hydrate ,salt XH2O?
Answers
The numerical represented by X IN THE GENERAL formulaa for a hydrate ,salt XH2O is water of crystallization
Give an illustration of what water of crystallization is.
The water of crystallization refers to the amount of water molecules that make up one salt formula unit. The presence of water molecules can be seen, for instance, in hydrated copper sulfate (CuSO4.5H 2 O). As a result, this hydrated species contains the water that causes precipitation. A dot separates the primary formula from the water of crystallization, as you can see.
The quantity of water molecules present as crystallization water is indicated by the letter X in the general expression, XH2O. X molecules of water serve as the precipitation water in each molecule of the hydrated salt, according to this.
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Pls I need help urgently. If you continue to putting one drop of water on one side of the paper towel, what do you observe happening to the water, the more drop you add? Explain
Answers
If you continue to put one drop of water on one side of the paper towel, we observe that water keep on moving in the whole towel as per the capillary action.
What is capillary action?
Capillary action is the process of a liquid flowing in a narrow space without the assistance of, or even in opposition to, any external forces like gravity.
Examples of capillary action.
Tears flowing through tear ducts
water rising in a straw or glass tube defying gravity
water passing through a cloth towel
Therefore, If you continue to put one drop of water on one side of the paper towel, we observe that water keep on moving in the whole towel as per the capillary action.
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The force of gravity is dependent on certain factors. According to the illustration, what factor(s) influence the gravitational attraction between two objects. A) mass and distance B) distance and pull C) composition and mass D) mass and density
Answers
According to the illustration, the factors that influence the gravitational attraction between two objects would be mass and distance. Option A.
Factors influencing gravitational attractionThe gravitational attraction between two objects is determined by two factors: their masses and the distance between them.
The greater the mass of each object, the greater the gravitational attraction between them. The farther apart the objects are, the weaker the gravitational force between them.This is due to the inverse square law, which states that the force between two objects is proportional to the inverse square of the distance between them.
Therefore, the correct answer is mass and distance.
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Answer:it is A
Explanation:
e.
Which two statements are true about this chemical reaction that forms acid
rain?
2NO₂ + H₂O
0-N=0 H-O-H
0-N=0
→HNO₂ +
HNO HON=0
HNO,
O
A. The bonds that form are between N and O in NO₂ and between H
and O in H₂O.
B. The bonds that break are between N and O in HNO2 and between
O and H in HNO3.
C. The bonds that form are between N and O in HNO2 and between
O and H in HNO3.
D. The bonds that break are between N and O in NO₂ and between H
and O in H₂O.
Answers
The two statement which are true about acid rain with chemical changes are the bonds that form are between N and O in HNO₂ and between O and H in HNO₃.The bonds that break are between N and O in NO₂ and between H and O in H₂O.
What are chemical changes?Chemical changes are defined as changes which occur when a substance combines with another substance to form a new substance.Alternatively, when a substance breaks down or decomposes to give new substances it is also considered to be a chemical change.
There are several characteristics of chemical changes like change in color, change in state , change in odor and change in composition . During chemical change there is also formation of precipitate an insoluble mass of substance or even evolution of gases.
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Use the equation for Boyle’s Law to calculate the following. (2pts)
A piston chamber, like a car engine, is filled with 2.00 L of nitrogen gas at 425kPa. The piston is compressed to a volume of 0.35 L.
What is now the pressure inside of the piston chamber? (Assume no gas leaked out).
Answers
According to the question the pressure inside the piston chamber is 2414.29 kPa.
What is pressure?Pressure is a measure of the force applied to a given area. It is usually expressed in terms of force per unit area such as pascals (Pa). Pressure is an important concept in physics and is used to describe a variety of phenomena in many areas of science. Pressure is most commonly used to describe the force applied by a gas or liquid on an object. The greater the pressure, the stronger the force. It can also be used to describe forces that are applied to a surface by a solid object. Pressure can be measured with a variety of instruments such as manometers, barometers, and pressure gauges.
The equation for Boyle's Law is P1V1=P2V2, where P1 is the original pressure, V1 is the original volume, P2 is the new pressure, and V2 is the new volume. Using this equation, we can calculate the new pressure, P2, as follows:
P2 = (P1V1)/V2
P2 = (425kPa * 2.00L) / 0.35L
P2 = 2414.29kPa
Therefore, the pressure inside the piston chamber is 2414.29kPa.
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1. Cite One experience of yours that you accept or receive something or someone?
2. How does it feel if you have experienced accepting or receiving?
3. Why do you feel that way?
Answers
Answer: it feels good, because that person cares about you
Explanation:
HELP!!! CHEMISTRY QUESTION NEED ANSWERED QUICKLY!!!
(Picture attached)
The forward reaction for Reaction B is...
- endothermic
- exothermic
If Reaction B was at equilibrium and then was heated ______ CH3OH would be present after the reaction adjusts to the new temperature.
- more
- less
- the same amount of
If Reaction B was at equilibrium and then H2 was added, _____ CH3OH would be present after the reaction adjusts.
- more
- less
- the same amount of
If Reaction B was at equilibrium and then H2 was added, _____ CO would be present after the reaction adjusts.
- more
- less
- the same amount of
Answers
Answer:
#1 exothermic
what's the difference between ionic and covalent bonding
Answers
Answer:
There are primarily two forms of bonding that an atom can participate in: Covalent and Ionic. Covalent bonding involves the sharing of electrons between two or more atoms. Ionic bonds form when two or more ions come together and are held together by charge differences.
Explanation:
The NH3 synthesis i Haber's process is an exothermic reaction it should be favoured at low temperature but optimum temperature is 400 degree Why?
Answers
The Haber process is a complex industrial process, and several factors must be taken into consideration when determining the optimum temperature.
What is Harber process?
Ammonia (NH3) is created chemically by the Haber process from nitrogen gas (N2) and hydrogen gas (H2). The technique was created in the early 20th century by a German chemist by the name of Fritz Haber, hence the name.
With the aid of a catalyst, usually iron, the Haber process involves the reaction of nitrogen gas and hydrogen gas at high pressure and high temperature. The reaction's chemical equation is as follows:
N2 + 3H2 ⇌ 2NH3
In the Haber process, the creation of ammonia (NH3) is an exothermic reaction. Le Chatelier's principle states that an exothermic reaction is more advantageous at lower temperatures. In order to maximise the ammonia yield, one might therefore infer that the Haber process should be carried out at low temperatures.
But because the Haber process is a sophisticated industrial procedure, choosing the ideal temperature requires careful thought of a number of variables. While a low temperature may promote the forward reaction, it may also cause the reaction to proceed more slowly, resulting in less ammonia being produced. The pressure and concentration of the reactants also have an impact on reaction rate.
The Haber process has been successfully used at temperatures between 400 and 450°C, based on the catalyst employed. Due to the low temperature favouring the forward reaction, the reaction rate is high enough at this temperature to achieve an acceptable ammonia production rate while also allowing for a good yield of ammonia. Moreover, the inclusion of a catalyst (often iron) can speed up the reaction even more and boost ammonia output.
In conclusion, even if the forward reaction in the Haber process may be favoured by a low temperature, this does not mean that this temperature is the best one because other variables that affect the reaction rate and production rate may also be at play. By testing, it has been discovered that a catalyst and a temperature of roughly 400–450°C offer the greatest ammonia yield and reaction rate balance.
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These symbols represent sodium hydroxide and hydrogen gas. Sodium hydroxide is
a strong base. (Chemicals that contain the hydroxide ion (OH) are bases.)
How do the products of the reaction relate to the phenol red test and the splint test?
Answers
The appearance of pink color in the phenol red test and the presence of flame and "pop" sound in the splint test indicate the production of NaOH and H2 gas, respectively, in the reaction between zinc, HCl, and NaOH.
How does sodium hydroxide and hydrogen gas appear from the phenol red test and the splint test?Sodium hydroxide (NaOH) and hydrogen gas (H2) can be produced by the reaction between zinc and hydrochloric acid (HCl) in the presence of sodium hydroxide. This reaction can be tested using the phenol red test and the splint test.
In the phenol red test, phenol red indicator is added to the reaction mixture. Phenol red is a pH indicator that changes color depending on the acidity or basicity of the solution. When NaOH is added to the reaction mixture, it neutralizes the acid (HCl) and increases the pH of the solution. This causes phenol red to change from yellow (acidic) to pink (basic). The appearance of pink color indicates the presence of NaOH.
In the splint test, a lighted splint is brought near the reaction mixture. When H2 gas is produced in the reaction, it can be tested using the splint test. H2 is a highly flammable gas that reacts with oxygen (O2) to produce water (H2O) vapor. When a lighted splint is brought near the reaction mixture, it can ignite the H2 gas, producing a "pop" sound and a small flame. This appearance of flame and "pop" sound confirms the presence of H2 gas.
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the kelvin temperature of gas decreases to one- third its original value the pressure exerted on the gas remains constant what happens to the volume of the gas?
Answers
the amount of gas present does not change when the pressure is applied to it It gets bigger.
When a gas's temperature declines but its pressure and amount stay constant, what happens to its volume?These are typical examples of how temperatures can alter the volume of a confined gas while keeping the pressure constant:The volume increases as the temperature rises and decreases as the temperature drops.
How does a gas's pressure change as its temperature decreases?A gas's molecules move more swiftly when it is heated because they are given more energy.More pressure and greater collisions are the direct result for the container's walls.Yet, cooling the particles will make them move more slowly and lower pressure.Try this to play about with the relationships a little.
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If a product's food label indicates it contains 80 calories per serving, and you consume three servings, how many calories did you consume?
Answers
Answer: 240 would be the correct answer (a)
Explanation: so there are 80 calories per serving and you consume 3 servings you would consume 240, so 3x80=240
Can you help me put this in order please i know henning Bramd go first but i need this quick
•Hennig Brand
• Sir William Ramsay
• Ernest Rutherford
• Dimitri Mendeleev
• J.J Thomson
• John Newlands
• Lothar Meyer
• Glenn Seaborg
• Robert Boyle
• Marie Curie
Answers
Scientists in their order of discoveries are Robert Boyle,Hennig Brand, Lothar Meyer,Sir William Ramsay,Marie Curie,John Newlands,Glenn Seaborg,Ernest Rutherford, Dimitri Mendeleev,J.J Thomson.
Who are scientists?A scientist is a person who researches to advance knowledge in an area of the natural sciences.
In classical antiquity, there was no real ancient analog of a modern scientist. Instead, philosophers engaged in the philosophical study of nature called natural philosophy, a precursor of natural science.Though Thales (circa 624–545 BC) was arguably the first scientist for describing how cosmic events may be seen as natural, not necessarily caused by gods.
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Review matching
Supersaturated
Saturated
Agitation
Unsaturated
Solute
Solvent
Answers
1. Supersaturated : B cannot hold more solute.
2. Saturated: C Has more solute than it can hold.
3. Agitation: E. Stirring (to dissolve faster).
4. Unsaturated : A can hold more solute.
5. Solute : F smallest part of a solution.
6. Solvent: D larger amount present.
Definition Known as a saturated solution, it is the liquid formed when the greatest possible amount of solute dissolves at a particular temperature. The term "supersaturated solution" refers to a solution that contains more solute than is necessary to saturate it.Agitation is the motion of one or more ingredients in a mixture to enhance interaction.When there is less dissolved solute than the solvent's saturation point, a solution is said to be unsaturated (at that specific temperature gradient).The solvent is the dissolving media, and the solute is the substance that is being dissolved.For more information on saturation of solution kindly visit to
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Given the reaction,
2 H2 (g) + 02 (g) -> 2 H20 (g)
Find the mass of water produced from 6.4 L H2 at STP if all of it reacts. Round your answer to two decimal places.
Answers
Answer:
First, we need to find the number of moles of H2 present in 6.4 L at STP (Standard Temperature and Pressure), which is 0°C and 1 atm pressure. At STP, one mole of any gas occupies 22.4 L of volume.
So, the number of moles of H2 present in 6.4 L at STP is:
6.4 L H2 x (1 mol H2/22.4 L H2) = 0.286 mol H2
From the balanced chemical equation, we know that 2 moles of H2 produce 2 moles of H2O.
So, 0.286 mol H2 will produce (2/2) x 0.286 = 0.286 mol H2O.
Finally, we can use the molar mass of water (18.015 g/mol) to find the mass of water produced:
0.286 mol H2O x 18.015 g/mol = 5.16 g H2O
Therefore, the mass of water produced from 6.4 L H2 at STP is 5.16 g.
Science (middle school work)
Answers
The answers include the following:
The fossil record arranges fossils in order from oldest to youngest gives us a picture of how the organism evolve over time.A Romer's gap is when fossil stop in the fossil record.Fossils are the remains of organisms preserved in the earth that provides of life's history of earth.Index minerals are primarily found in metamorphic rocks because these rocks form at low temperature and pressure.What is a Fossil?This is referred to as any preserved remains, impression, or trace of any once-living thing from a past geological age.
They are the remains of organisms preserved in the earth that provides of life's history of earth and also provides more information about the evolutionary sequence and activities which took place on earth as a whole.
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What theory explains the behavior of gases
Answers
Answer: The Kinetic Molecular Theory (KMT)
Explanation:
Can you help me put this in order please i know henning Bramd go first but i need this quick
Answers
The list appears to be a chronological order of famous scientists and chemists. Here's the order from earliest to latest:
Hennig BrandRobert BoyleMarie CurieJohn NewlandsLothar MeyerDimitri MendeleevJ.J ThomsonErnest RutherfordSir William RamsayGlenn SeaborgWho are scientists?Generally, Robert Boyle (1627-1691): Irish chemist and physicist, known as the founder of modern chemistry.
Hennig Brand (c. 1630 – c. 1710): German alchemist and the discoverer of phosphorus.
Marie Curie (1867-1934): Polish-born physicist and chemist, famous for her pioneering research on radioactivity and the first woman to win a Nobel Prize.
John Newlands (1837-1898): English chemist who developed the concept of the periodic table of elements.
J.J Thomson (1856-1940): English physicist who discovered the electron and isotopes.
Lothar Meyer (1830-1895): German chemist who independently developed the concept of the periodic table around the same time as Dmitri Mendeleev.
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IO2 is….
A. Iodine (II) oxide
B. Moniodide dioxide
C. Iodine dioxide
D. Iodine oxide
Answers
IO2 is C. Iodine dioxide.
What is Iodine dioxide?Iodine dioxide can be defined as a chemical compound that is made up of of an atom of iodine and two atoms of oxygen.
The prefix di- indicates that there are two atoms of oxygen in the compound, and since the oxidation state of iodine in the compound is +4, it is named iodine dioxide.
It is a yellowish-brown solid at room temperature and is used as an oxidizing agent in various chemical reactions.
Therefore the correct option is C.
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Consider all of the different types of c-h bonds in cyclopentene and rank them in order of increasing bond strength? 10. 25 (
Answers
In cyclopentene, there are three types of C-H bonds:
Allylic C-H bond (bond adjacent to the double bond)
Bridgehead C-H bond (bond at the bridgehead carbon)
Methylenic C-H bond (bond in the ring)
The order of increasing bond strength is generally:
Allylic C-H bond
Methylenic C-H bond
Bridgehead C-H bond
Cyclopentene is a cyclic hydrocarbon with the molecular formula C5H8. It is an unsaturated compound with a double bond between two carbon atoms in the ring, making it an alkene. Cyclopentene is a clear, colorless liquid that is insoluble in water but soluble in many organic solvents. It is commonly used as a starting material in the synthesis of various organic compounds, including pharmaceuticals and agrochemicals.Cyclopentene undergoes various chemical reactions due to its unsaturated nature, such as addition reactions with electrophiles and hydrogenation reactions. It can also undergo polymerization to form poly(cyclopentene) with a high glass transition temperature and good mechanical properties.
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How many protons (p+), neutrons (n), and electrons (e–) are in the following isotope?
1 point
48 p+, 107 n, 47 e–
47 p+, 107 n, 48 e–
47 p+, 60 n, 46 e–
48 p+, 60 n, 47 e–
Answers
Answer: 47 p+, 107 n, 48 e–
Explanation:
If X is an atom from group 3 and Y is an atom from group 6, what is the most likely ionic formula?
Answers
If X is an atom from the group 3 and Y is an atom from the group 6, the most likely ionic formula is X₂Y₃.
The X is the atom from the group 3 and it will form the cation = X³⁺
The Y is the atom from the group 6 and it will form the anion = Y²⁻
To balance the charges, the 2X³⁺ cations and the 3Y²⁻ anions form the ionic formula. The ionic formula of the compound is as follows :
The ionic formula = X₂Y₃
This is called as the ionic compound, in which the compound is formed by the sharing of the electrons.
Thus, the ionic formula is X₂Y₃.
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Which of the following substances is least soluble in 100. g of water at 50C?
NH4Cl
NaCl
HCl
KCl
Answers
NaCl is least soluble in 100. g of water at 50C.
Which is more water soluble, alcohol or acid?It forms a hydroxyl group with water molecules, but non-polar other hydrocarbons with equivalent molecular weights do not.As a result, alcohol dissolves better in water.
What does acid dissolve more readily than water?Because of the formation of a weak acid or aluminum salt as a result of the reaction between aluminum phosphate and acid, aluminum phosphate is more accessible in acid than water.Acids can so dissociate aluminum phosphate more effectively than water.
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Jana is a scientist and is designing a portable water warmer that can help her warm up her samples while away from the lab. The device will store two chemicals separately. When she wants to warm up water, she will activate the device, which will mix the chemicals together to generate energy in the form of heat. The heat will increase the temperature of a third part of the device, which is filled with water. Jana wants to find the best amount of two chemicals that will generate energy in a safe and portable way. She mixes copper sulphate and zinc in a beaker and records her observations in the table.
Jana needs her device to be able to warm water to temperatures between 70 °C and 100 °C. She tests the device using different amounts of copper sulfate and zinc and records the resulting water temperature at different time intervals.
The table shows the amount of zinc and copper sulfate that were used for each trial. The graph shows the data she collected on the temperature of the water.
⦁ Determine the type of reaction that took place in the beaker. Justify your answer using evidence from the graph.
⦁ Interpret the factors that affected the water temperature. List at least 2 factors.
⦁ How could Jana modify her design to meet the temperature constraints? Provide at least 3 ideas.
⦁ Is this copper sulfate and zinc reaction balanced? Justify your answer.
CuSO4 (aq) + H2O (aq) + Zn(s) Cu(s) + ZnSO4(aq) + H2O(aq)
⦁ What other combination of reactive chemicals can Jana use in case copper sulfate and zinc didn’t give her the results she was waiting for?
⦁ Create a model to demonstrate a chemical reaction, including a detailed explanation of the reaction and any changes that occur.
⦁ Research 2 other examples from real life where endothermic and exothermic reactions can be used safely in creating items of benefit to humanity. Describe the role of the reaction in the product usage.
Answers
Answer: I would love to help but i cant see the table
Explanation:
Jana can modify her device by increasing the amount of zinc and decreasing the amount of copper sulfate to generate more heat, which will increase the water temperature within the desired range of 70°C to 100°C.
How could Jana modify her design to meet the temperature constraints?
Factors that affected the water temperature include the amount of zinc and copper sulfate used, the duration of activation, and the initial temperature of water. To meet the temperature constraints, Jana could modify her device by:Increasing the amount of zinc and decreasing the amount of copper sulfate to generate more heatDecreasing the amount of water to be heatedUsing a more efficient heat transfer mechanismBy making these modifications, Jana can increase the water temperature to the desired range and ensure that her device is portable, safe, and effective.
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If 20. 0 g of magnesium react with excess hydrochloric acid, how many grams of magnesium chloride are produced? ____Mg + ____HCl ___MgCl2 + _____H2
Answers
78.3 grams of magnesium chloride are produced when 20.0 g of magnesium reacts with excess hydrochloric acid.
The balanced chemical equation for the reaction between magnesium and hydrochloric acid is:
Mg + 2HCl → MgCl2 + H2
From the equation, we can see that one mole of magnesium reacts with two moles of hydrochloric acid to produce one mole of magnesium chloride and one mole of hydrogen gas.
To find the amount of magnesium chloride produced when 20.0 g of magnesium reacts, we first need to convert the mass of magnesium to moles. The molar mass of magnesium is 24.31 g/mol, so:
moles of Mg = 20.0 g / 24.31 g/mol = 0.823 moles of Mg
According to the stoichiometry of the balanced equation, 1 mole of magnesium produces 1 mole of magnesium chloride, so the moles of magnesium chloride produced will also be 0.823 moles.
Finally, we can convert the moles of magnesium chloride to grams using the molar mass of magnesium chloride, which is 95.21 g/mol:
mass of MgCl2 = 0.823 moles × 95.21 g/mol = 78.3 g
When 20.0 g of magnesium reacts with excess hydrochloric acid, 78.3 g of magnesium chloride is formed. The reaction's balanced chemical equation is:
Mg + 2HCl → MgCl2 + H2
So, 20.0 g of Mg reacts with 1.65 moles of HCl to produce 78.3 g of MgCl2 and H2 gas.
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Introduction:
Define the following terms:
Chemical reaction, reactant, product, precipitate, Law of Conservation of Mass
Answers
Each element's mass at the start of an interaction will be the same as its mass at the conclusion of the reaction.
Does water operate as a reactant?Individual water molecules may behave as catalysts or reactants in the process. By interactions between solute and solvent and solvent rearrangement, water can influence variations in the free activation power.
Which side is composed of products and reactants?In a chemical reaction, the active sites (what you start with) are transformed into byproducts (what you end with). An arrow separates the reaction mixture, which are displayed on the left side about an equation, from the product, which are displayed on the right.
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