Answer:
1.67*10^9
Explanation:
Answer:1.67*10^9
Explanation:
How many grams of hydronic acid will be formed upon the complete reaction of 22.6 grams of water with excess chlorine gas
Hydrochloric acid, HCl, is formed when chlorine gas, Cl2, reacts with water. The balanced chemical equation for this reaction is:
Cl2 + H2O → HCl + H2O
What is chemical equation ?A chemical equation is a symbolic representation of a chemical reaction that uses chemical formulas to describe the reactants and products of the reaction. The reactants are written on the left side of the equation and the products are written on the right side. The arrow separating the two sides of the equation indicates the direction of the reaction, with the reactants on the left side and the products on the right side.
The amount of hydrochloric acid formed will be equal to the number of grams of water used in the reaction. Since 22.6 grams of water was used, 22.6 grams of hydrochloric acid will be formed upon the complete reaction of 22.6 grams of water with excess chlorine gas.
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the pressure on 2.5L of antistatic gas is changed from 760 mmHg to 304mmHg .What is the final volume if the temperature remains the same?
Answer:
combined gas law, which relates the pressure, volume, and temperature of a gas. The combined gas law is given by:
P1V1/T1 = P2V2/T2
Where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.
In this problem, the temperature remains the same, so we can simplify the combined gas law to:
P1V1 = P2V2
Substituting the given values into the equation, we get:
760 mmHg × 2.5 L = 304 mmHg × V2
Solving for V2, we get:
V2 = (760 mmHg × 2.5 L) / 304 mmHg
V2 ≈ 6.26 L
Therefore, the final volume of the gas is approximately 6.26 L.
When 418J of heat energy are added to 10.0 grams of water at 40.0 C, what will the final temperature of the water be?
The final temperature of the water will be approximately 50.0°C (to two significant figures).
How to find the final temperatureTo solve this problem, we need to use the specific heat capacity equation:
q = m * c * ΔT
where
q is the amount of heat energy added,
m is the mass of the water,
c is the specific heat capacity of water, and
ΔT is the change in temperature.
First, we need to determine the initial temperature of the water. We are given that the water is initially at 40.0°C.
Next, we can calculate the amount of heat energy that is added to the water:
q = 418 J
m = 10.0 grams.
c is 4.184 J/g°C.
We can rearrange the equation to solve for ΔT:
ΔT = q / (m * c)
ΔT = 418 J / (10.0 g * 4.184 J/g°C) = 9.99°C
This is the change in temperature of the water. To find the final temperature, we add this to the initial temperature:
Final temperature = 40.0°C + 9.99°C = 49.99°C
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Which of the following units would you use to describe the mass of baking soda needed for a reaction?
Gram
Meter
Mole
Pound
The mass of baking soda required for a reaction is measured in grammes.
How are masses expressed in grammes?The metric system uses the gramme and kilogramme as its two primary units for measuring mass. Using the common metric prefixes, we can derive the remaining metric units from the gramme. A paper clip weighs roughly one gramme.
How do you use a scale to measure mass in grammes?Using balancing scales is one method of determining an object's mass. Place the item you want to weigh on one side of a balance scale, then add gramme masses to the opposite side until the scales are level. Typically, masses for weighing come in 1 g and 5 g units.
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why does the moon orbit earth in the same direction that earth orbits the sun?
Due to the gravitational force the moon orbit earth in the same direction that earth orbits the sun.
What is gravitational force ?
Newton's Law of Gravitation and the force of gravity. The force of attraction between any two bodies is known as gravity, or simply gravity. All objects in the cosmos are attracted to one another with some force, but most of the time this attraction is too faint to be noticed due to the extreme distance between the objects.
What is distance ?Distance is an object's overall movement, regardless of direction. Distance refers to the length of an object's real route as a whole. The displacement of an object between two points is defined as the straight line distance (shortest distance), measured from one position to the other.
Therefore, Due to the gravitational force the moon orbit earth in the same direction that earth orbits the sun.
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In the SciShow video above, Hank Green says "Science isn't good or bad. It's only true," then later says "The science doesn't care. It's up to us to decide what we do with it." Do you agree with these statements? Why or why not? Use specific examples to support your answer.
Is the world better off with or without Fritz Haber? Explain your stance. How should we think about the total impact of someone's life?
Science could be used either for good or for bad depending on the user. This can be observed from the life of Fritz Haber described below.
Is the world better off with or without Fritz Haber?Fritz Haber was a German chemist who made significant contributions to the fields of chemistry and agriculture, and he is known for developing the process of synthesizing ammonia, which is used in fertilizer production. However, he is also known for his involvement in the development and use of chemical weapons during World War I.
Overall, it is difficult to make a definitive statement about whether the world is better off with or without Fritz Haber. His contributions to science and agriculture have been important, but the development and use of chemical weapons are atrocities that cannot be ignored. It is important to acknowledge and learn from both aspects of his legacy.
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According to Bernoulli's Principle, what type of relationship do fluid velocity and pressure share?
Positive, because as the velocity of a fluid increases, so does the pressure.
Negative, because as the velocity of a fluid increases the pressure decreases.
Neutral, because velocity and pressure do not correlate in fluids.
The right response is "Negative, since pressure reduces as fluid velocity rises." The best choice is B.
What are two illustrations of the Bernoulli principle?As a vehicle goes quickly, it creates a low pressure region, which causes dust to be pushed along in it. As a swift train passes by us while we are in the platform, we are drawn toward the rail due to the low pressure created by the train's extreme speed.
What does the Bernoulli principle mean for children?According to Bernoulli's principle, an item experiences various pressures as air travels about it. Less pressure results from faster air. More pressure results from slower air.
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The Complete Question :
According to Bernoulli's Principle, what type of relationship do fluid velocity and pressure share?
A. Positive, because as the velocity of a fluid increases, so does the pressure.
B. Negative, because as the velocity of a fluid increases the pressure decreases.
C. Neutral, because velocity and pressure do not correlate in fluids.
Reptiles do not have the ability to create their own heat, and instead, sit in the sun for long periods of time in the mornings to warm up. Mammals and birds, on the other hand, have the ability to create their own heat. Where do mammals and birds get the energy for this heat?
Explanation:
Mammals and birds have a unique metabolic process that allows them to generate their own body heat, known as endothermy or warm-bloodedness. This means that they can regulate their body temperature internally, regardless of the external temperature.
The process of generating heat requires a lot of energy, which is primarily produced through the breakdown of nutrients, such as glucose and fatty acids, obtained from food. The mitochondria, which are present in almost all cells of the body, play a critical role in this process. They use oxygen to convert these nutrients into energy in the form of ATP (adenosine triphosphate), which powers the metabolic processes necessary for maintaining body temperature.
Mammals and birds also have specialized tissues that help generate and conserve heat, such as brown adipose tissue and feathers. These tissues contain a high density of mitochondria, which allows for more efficient energy production and heat generation.
Overall, the ability of mammals and birds to generate their own heat is a key adaptation that enables them to thrive in a wide range of environments, from the icy poles to the scorching deserts.
Does the fertilization affect result in a positive or negative feedback loop in how it affects atmospheric carbon dioxide emissions?
Answer:
The effect of fertilization on atmospheric carbon dioxide emissions depends on the type of fertilization and the specific context in which it is used. In some cases, fertilization can lead to a positive feedback loop that increases carbon dioxide emissions, while in other cases, it can have a negative feedback loop that reduces emissions.
When fertilizers are applied to agricultural crops, they can increase the productivity and yield of the plants, leading to increased carbon dioxide uptake through photosynthesis. This can have a negative feedback loop, as more carbon is sequestered from the atmosphere and stored in the soil and plant biomass.
However, excessive use of fertilizers can lead to a positive feedback loop. The excess nutrients can cause algal blooms in bodies of water, which can lead to oxygen depletion and the release of carbon dioxide and other greenhouse gases. Moreover, over-fertilization can lead to the degradation of soil health, which can reduce the carbon sequestration potential of soils.
Overall, the impact of fertilization on carbon dioxide emissions depends on various factors such as the type and amount of fertilizer used, the management practices, and the ecological context in which they are applied. It is important to use fertilization practices that support sustainable and regenerative agriculture, minimize greenhouse gas emissions, and promote soil health.
find the complete mole ratio of:
2IrCl3(aq) + 3NaOH(aq) → Ir2O3(s) + 3HCl(aq) + 3NaCl(aq)
The balanced chemical equation for the given reaction is: 2IrCl3(aq) + 3NaOH(aq) → Ir2O3(s) + 3HCl(aq) + 3NaCl(aq)
How is the mole to mole ratio calculated?Use the atomic masses to translate each element's mass into moles. By dividing the total number of moles by the smallest number of moles, you may determine the ratio or the number of moles of each element.
The mole ratio of the reactants and products are represented by the coefficients in a balanced chemical equation. Hence, the total mole ratio for the indicated reaction is:
2 moles of IrCl3 : 3 moles of NaOH : 1 mole of Ir2O3 : 3 moles of HCl : 3 moles of NaCl
This can also be expressed in simpler terms as:
2:3:1:3:3
As a result, 3 moles of NaOH are needed to completely react with every 2 moles of IrCl3. 3 moles of HCl, 3 moles of NaCl, and 1 mole of Ir2O3 are the end products.
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What mass of water in kg must evaporate in order for the person's body temperature to remain constant? use the enthalpy of vaporization of water at 298k is 44. 016 kj mol-1
The mass of water in kg must evaporate in order for the person's body temperature to remain constant is 0.0243 kg.
Internal energy, which emerges from the molecular state of motion of matter, is an energy form inherent in all systems. Internal energy is represented by the symbol U, and the unit of measurement is the joule (J).
Let mass of the body be x
We have,
enthalpy = 44.016 kj mol-1
Temperature be 298 K
As ideal gas,
Δ = 44.016 - x/18 x 8.314 x 10⁻³ x 298 K
40.66 = 44.016 - x/18
-3.356 x 10³/8.314 x 298 = x/18
-1.35 = x/18
x = 24.3 g
So the amount of water be 0.0243 kg.
Internal energy increases when temperature rises and states or phases transition from solid to liquid and liquid to gas. Planetary bodies can be viewed as hybrids of heat reservoirs and heat engines. Internal energy E is stored in the heat reservoirs, and heat engines transform some of this thermal energy into mechanical, electrical, and chemical energies.
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A gas sample is collected in a 2. 2-L tank when the temperature is 2°C. What is the kelvin temperature of the gas?
When the temperature is 2°C, a gas sample is collected in a 2. 2-L tank. the Kelvin temperature of the gas is 275.15K
To convert a temperature from Celsius to Kelvin, simply multiply it by 273.15 degrees Celsius. So, in this instance, we have:
Celsius temperature + 273.15 K Kelvin temperature = 2°C + 273.15 K Kelvin temperature = 275.15 K
As a result, the gas's Kelvin temperature is 275.15 K.
The Kelvin temperature unit is used in the scientific community. It is an absolute temperature scale, with 0 Kelvin representing the absolute coldest temperature possible.
One Kelvin degree is the same size as one Celsius degree, but the zero point on the Kelvin scale is 273.15 degrees different from the Celsius scale. To convert a temperature from Celsius to Kelvin, simply multiply it by 273.15 degrees Celsius. Kelvin temperatures are widely used in scientific and engineering applications, especially thermodynamics and materials science.
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How many moles of dinitrogen monoxide will be formed upon the complete reaction of 25.1 g of ammonium nitrate
0.312 moles of dinitrogen monoxide will be produced upon complete reaction of 25.1 g of ammonium nitrate.
What is ammonium nitrate?Ammonium nitrate is a chemical compound with the chemical formula of NH 4NO 3 and is a white crystalline salt consisting of ions of ammonium and nitrate.
NH4NO3 → N2O + 2H2O
Molar mass of NH4NO3 = 80.04 g/mol
Number of moles of NH4NO3 = 25.1 g / 80.04 g/mol = 0.312 moles
According to the balanced chemical equation, 1 mole of NH4NO3 produces 1 mole of N2O. Therefore, 0.312 moles of NH4NO3 will produce 0.312 moles of N2O.
0.312 moles of dinitrogen monoxide will be formed after the reaction of 25.1 g of ammonium nitrate.
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Nickle can be produced by reacting nickle oxide with carbon.
An equation for the reaction is: NiO + Ni -->Ni + CO
Calculate the percentage atom economy for the reaction ro produce nickle
The atom economy for this reaction to produce nickel is approximately 44%.
What is Percentage Composition?
Percentage composition is a term used in chemistry to describe the percentage by mass of each element in a chemical compound. It is calculated by dividing the mass of each element by the total mass of the compound and multiplying by 100%. For example, the percentage composition of water (H2O) can be calculated by dividing the mass of hydrogen by the total mass of the compound (2 x 1.008 g / 18.015 g) and multiplying by 100%, which gives approximately 11.2%.
To calculate the atom economy, we need to compare the mass of the desired product (Ni) with the total mass of all the reactants.
The molar mass of NiO is 74.71 g/mol, and the molar mass of CO is 28.01 g/mol.
The equation shows that 1 mol of NiO reacts with 1 mol of Ni to produce 1 mol of Ni and 1 mol of CO.
The mass of 1 mol of Ni is 58.69 g.
74.71 g (NiO) + 58.69 g (Ni) = 133.4 g
The mass of the desired product (Ni) is 58.69 g.
Therefore, the percentage atom economy is:
(58.69 g / 133.4 g) x 100% = 44.04%
So the atom economy for this reaction to produce nickel is approximately 44%.
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Look at the positions of calcium, beryllium, and magnesium on the periodic table. Based on their locations, predict how many valence electrons these elements have and predict what the reactivity of these elements will generally be.
Beryllium, calcium, and mg are all known to be group 2 elements. Be's atomic number is 4, while those of magnesium and calcium are 12 and 20, respectively.They frequently produce an ion with a +2 charge as a result.
Do calcium and magnesium also react differently from top to bottom in terms of reactivity?Alkaline Since they rapidly give it up their two electrons of valence to reach a full outside energy level, resulting in the most stable configuration of electrons, earth metals are extremely reactive.From of the top to to bottom of the group, reactivity rises.
What connection exists between calcium and beryllium reactivity?the reason why beryllium is less reactive than calcium | Fandom.Although the two elements belong to the same group, calcium's valence electrons are located further from the nucleus.They are easily released because the nucleus does not hold them tightly.Higher reactivity is also a result of easily released electrons.
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. 2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
Molar Mass O= 16 g/mol
Na= 22.9 g/mol
Cl= 35.45 g/mol
Answer:
mass of O₂ produced is 576 grams.
What is the stoichiometry of a reaction?
Stoichiometry is the ratio of reactant particles to product particles in a reaction.
2NaClO₃(s) → 2NaCl(s) + 3O₂(g)
Therefore, in the reaction above, the stoichiometry is 2 : 2 : 3. i.e, two parts of NaClO₃ will produce 2 parts of NaCl and 3 parts of O₂.
Hence, if 12.00 moles of NaClO₃ is used, then, moles of O₂ = 3/2 × (12.00) = 18.00 moles.
To calculate mass in grams of O₂ produced, multiply number of moles by molar mass.
m(O₂) = n×M = 18.00×(16×2) = 576 g
Therefore, mass of O₂ produced is 576 grams.
How many moles of magnesium is 1. 25
x 1023 atoms of magnesium?
1.25 x 1023 atoms of magnesium contains 0.28. moles of magnesium.
A mole of any element contains Avogadro's number of that element's atoms. To find the number of moles of magnesium in 1.25 x 1023 atoms of magnesium, simply divide by Avogadro's number:
1.25 x
[tex] {10}^{23} [/tex]
magnesium atoms / 6.022 x
[tex] {10}^{23} [/tex]
atoms/mol = 0.208 moles magnesium
As a result, 1.25 x
[tex] {10}^{23} [/tex]
atoms of magnesium contain 0.208 moles of magnesium.
The number of particles (atoms, molecules, and ions) in one mole of a substance is represented by Avogadro's number, which is a fundamental constant in chemistry. It has a value of about 6.022 x
[tex] {10}^{23} [/tex]
particles per mole. The number was named after Italian scientist Amedeo Avogadro, who first proposed the concept in the early 19th century as a way to explain the relationship between the amount of a substance and its constituent particles.
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A student prepares a solution by dissolving 20.0 g of aluminum chloride (AlCl3) in enough water to produce 500 mL of solution. What is the molarity of the solution? Question 18 options: 0.040 M 0.320 M 0.080 M 0.160 M
The Molarity of the solution is 0.040M and the correct option is option A.
What is Molarity?
Molarity, also called molar concentration, is used to measure the quantity of a solute dissolved in a volume of solvent using the formula-
Molarity = number of moles of solute ÷ volume of solution in liters
Molarity of a solution is measured in moles per liter and is denoted by M.
When 1 mole of a substance is dissolved in water and the solution is made up to 1L, a solution with a molarity of 1M is produced.
Given,
Mass of aluminium chloride = 20g
Volume of solution = 500 ml
Molarity = mass of solute ÷ volume of the solvent in L
= 20 ÷ 500
= 0.040 M
Therefore, the Molarity of the solution is 0.040M and the correct option is option A.
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If we decrease the temperature to 200 K at constant pressure, what would the new volume be?
A. 6.67 L
B. 10 L
C. 13.3 L
D. 5 L
If we decrease the temperature to 200 K at constant pressure, 13.3 L would the new volume .
What is temperature?
Temperature is a unit used to represent how hot or cold something is. It can be stated using the Celsius or Fahrenheit scales, among others. Temperature shows which way heat energy will naturally flow, i.e., from a hotter (body with a higher temperature) to a colder (body with a lower temperature) (one at a lower temperature).
What is pressure?
As force applied per unit area, pressure is defined. P=FA, where F is the force operating perpendicular to the surface area A, gives it mathematical expression. The pascal (Pa), which equates to a newton per square metre (N/m 2), is the accepted unit of pressure.
Therefore, If we decrease the temperature to 200 K at constant pressure, 13.3 L would the new volume .
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Which choice describes a way that composting benefits the soil?
keeps moisture levels low
makes nutrients more accessible to organisms
locks up carbon and nitrogen so that it can’t be released
maintains a moderate temperature within soils
keeps soils at a comfortable temperature. Composting helps to keep soil temperatures at a consistent level, which helps to optimize the growth of beneficial organisms and plants.
What is temperature?Temperature is a measure of the degree or intensity of heat or cold in a body or environment. Temperature is measured using a thermometer, which is an instrument that detects the temperature of an object or environment by measuring the intensity of certain physical properties such as thermal expansion of gas, electrical resistance or the velocity of sound. Temperature is typically measured in degrees Celsius (°C) or degrees Fahrenheit (°F). When the temperature of a body or environment is higher than usual, it is said to be hot; when it is lower than usual, it is said to be cold.
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Answer:
c. makes nutrients more accessible to organisms
Explanation:
i took the test
What is the equilibrium constant for the following reaction?
6.
C+0₂=CO₂
[co₂]
[c] [₂]
O [c]³[₂]
[co₂]
O [co₂]
[c][0₂]
O [c][₂]
[co₂]
The equilibrium constant of the reaction is [CO₂]/([C][O₂]).
What is equilibrium constant of the compound?
The equilibrium constant for the reaction:
C + O₂ = CO₂
can be written as:
Kc = [CO₂]/([C][O₂])
where;
[CO₂][C], and [O₂] represent the molar concentrations of CO₂, C, and O₂, respectively, at equilibrium.The equilibrium constant Kc depends on the temperature and pressure of the system. At a given temperature and pressure, Kc is constant for a particular reaction, and it indicates the relative amounts of reactants and products at equilibrium.
The actual value of Kc for the given reaction can be determined experimentally, but it is approximately 1.00 x 10^23 at 25°C, which indicates that at equilibrium, the reaction heavily favors the formation of CO₂.
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Suppose 239. 7 mg of PbCl2 was added to 15. 0 mL of water in a flask, and the solution was allowed to reach equilibrium at 20. 0 oC. Some solute remained at the bottom of the flask after equilibrium, and the solution was filtered to collect the remaining PbCl2, which had a mass of 83. 6 mg. What is the solubility of PbCl2 (in g/L)?
The solubility of PbCl2 in water (H2O) at 20.0 °C (temperature) is 10.407 g/L.
First, we need to calculate how much PbCl2 actually dissolved in the water. The amount of PbCl2 that did dissolve is the difference between the initial amount of PbCl2 added and the amount of PbCl2 that remained after filtering:
Initial amount of PbCl2 = 239.7 mg
Amount of PbCl2 remaining after filtering = 83.6 mg
Amount of PbCl2 that dissolved = 239.7 mg - 83.6 mg = 156.1 mg
Next, we can use the density of water at 20.0 °C, which is 0.9982 g/mL, to calculate the volume of the solution:
Volume of solution = 15.0 mL = 0.015 L
Finally, we can calculate the solubility of PbCl2 in g/L:
Solubility of PbCl2 = amount of PbCl2 that dissolved / volume of solution
Solubility of PbCl2 = 156.1 mg / 0.015 L
Solubility of PbCl2 = 10406.7 mg/L
Solubility of PbCl2 = 10.407 g/L
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You fill a rigid steel cylinder that has a volume of 20. 0 L with 10. Moles of nitrogen gas at 313 ºK. What is the final pressure in kPa in the cylinder?
Answer:
The quantity of nitrogen the cylinder contains is 4477.8 g
Explanation:
hope this helps u out:))
Answer:
Assuming ideal gas behavior, we can use the ideal gas law:
PV = nRT
where P is the pressure, V is the volume, n is the number of moles, R is the gas constant, and T is the temperature in Kelvin.
First, we need to convert the temperature from Celsius to Kelvin:
T = 313 ºK
The gas constant R is 8.31 J/(mol·K), but we need to use a value in units of kPa·L/(mol·K) for the pressure and volume units given:
R = 8.31 kPa·L/(mol·K)
Plugging in the given values, we have:
P × 20.0 L = 10.0 mol × 8.31 kPa·L/(mol·K) × 313 K
Solving for P, we get:
P = (10.0 mol × 8.31 kPa·L/(mol·K) × 313 K) / 20.0 L
P = 1293 kPa
Therefore, the final pressure in the cylinder is 1293 kPa.
what are four characteristics that early geologists noticed while studying sedimentary rock layers
Early geologists identified four features while examining sedimentary rock layers: strata or layering, fossils, angular unconformities, and cross-bedding.
What are the 3 the primary types of sedimentary rocks?Rock fragments from other types of existing rocks or organic substance are used to create sedimentary rocks. Clastic, organic (biological), and chemical sedimentary rocks are the three distinct types of sedimentary rocks. Sandstone is a type of clast sedimentary rock, which is formed from fragments of other minerals.
Is granite a sedimentary rock?Igneous rock includes granite. Material is deposited, weathered, and other mechanisms that cause organic or mineral particles to settle down and collect result in the formation of sedimentary rock. All varieties of marble, as well as volcanic rocks like travertine and onyx, contain fossils.
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The lattice structure of ionic solid consists of positive ions and negative ions held together by ionic bonds. Describe the lattice structure of a molecular solid Ionic compound?
The lattice structure of a molecular solid Ionic compound are mentioned below.
What is lattice structure?
An asymmetrical three-dimensional structural arrangement of ions, atoms, and molecules to create a unit cell is called a lattice or a crystal lattice. The kind of crystal lattice is determined by a unit cell's substantial and distinctive geometrical shape. Every ion, atom, or molecule in a crystal structure's unit cell represents a point in a three-dimensional space.
What is ionic compound ?
An ion with a positive charge is a cation, whereas one with a negative charge is an anion.
Therefore, The lattice structure of a molecular solid Ionic compound are mentioned above.
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Coal is considered to be which type of resource? Responses nonrenewable nonrenewable renewable renewable reusable reusable biomass
Answer:
Coal is considered to be a nonrenewable resource.
You have 1.6 X 10²¹ molecules of oxygen gas, O2. What is the mass of that number of molecules?
Answer:
0.085049833
Explanation:
use the formula n=number of particles/Avogadro's number and find the value of n which is miles and then use the formula n=mass/molar mass. The molar mass you multiply the mass number of oxygen by 2
molar mass= 32g/mol
Avogadro's number=6.02*10^23
number of particles=1.6*10^21
Pls I need help urgently. What can be predicted about meniscus formation if the adhesion and cohesion forces were equal in the graduated cylinder?
If the adhesion and cohesion forces were equal in a graduated cylinder, there would be no meniscus formation. This is because the shape of a meniscus is a result of the difference in strength between the adhesive and cohesive forces between the liquid and the surface it comes into contact with.
If the adhesive forces were equal to the cohesive forces, the liquid would not be attracted more strongly to the surface of the container than to its own molecules. As a result, the surface of the liquid would be flat and level with the edge of the container. This is the case with mercury, which has approximately equal cohesive and adhesive forces, resulting in a flat surface in a container.
However, in most cases, the adhesive forces between a liquid and a container are stronger than the cohesive forces between the liquid molecules themselves, resulting in a concave meniscus. This is because the liquid is attracted more strongly to the surface of the container than to its own molecules, causing the surface of the liquid to curve downward at the edges. On the other hand, if the cohesive forces were stronger than the adhesive forces, the liquid would form a convex meniscus, with the surface of the liquid curving upward at the edges. This is the case with water in a hydrophobic container, such as a wax-coated or greasy container.
What type of change is making popcorn and why?
Answer:The answer is physical change.
Explanation: The reason for this is because when popcorn is in its original state/form it is inside of a tear like shell and then when it changes it is an odd shaped peice if popped corn. Simple way to know is its physicle apperance changes.
HELP pls with this lab sheet
A balanced equation obey the law of conservation of mass. According to law of conservation of mass, mass can neither be created nor be destroyed.
What is a balanced equation?A balanced chemical equation is an equation in which the number of atoms of reactants and products on both sides of the equation are balanced. The coefficients are the numbers which are used to balance the chemical equation.
The decomposition of potassium chlorate is:
2KClO₃ (s) + heat → 2KCl (s) + 3O₂ (g)
Here the number of 'K', 'Cl' and 'O' atoms are equal on both sides of the equation.
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