Answer:
we can use the ideal gas law equation:
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.
First, we can find the total number of moles of gas in the container:
n(total) = n(A) + n(B)
To find the number of moles of each gas, we can use the partial pressures and the total pressure:
P(A) / P(total) = n(A) / n(total)
P(B) / P(total) = n(B) / n(total)
We can rearrange these equations to solve for n(A) and n(B):
n(A) = P(A) / P(total) × n(total)
n(B) = P(B) / P(total) × n(total)
We know that the partial pressures of gas A and gas B are 0.264 atm and 0.548 atm, respectively, and we can find the total pressure by adding these partial pressures:
P(total) = P(A) + P(B) = 0.264 atm + 0.548 atm = 0.812 atm
We can also find the total number of moles of gas in the container:
n(total) = PV / RT = (0.812 atm) × (9.10 L) / (0.08206 L·atm/mol·K × 316 K) = 0.286 mol
Now we can add 0.130 mol of a third gas, which gives us a new total number of moles of gas:
n(new) = n(total) + 0.130 mol = 0.286 mol + 0.130 mol = 0.416 mol
Since there is no change in volume or temperature, the new total pressure will be proportional to the total number of moles of gas:
P(new) = P(total) × n(new) / n(total) = (0.812 atm) × (0.416 mol) / (0.286 mol) = 1.18 atm
Therefore, the total pressure will become 1.18 atm.
The law of conservation of nucleon number says that the total number of _______ before and after the reaction.
A. neutrons
B. electrons
C. protons
D. nucleons
Answer:
The correct answer is D. nucleons.
The law of conservation of nucleon number, also known as the law of conservation of mass number, states that the total number of nucleons (protons and neutrons) in a closed system remains constant before and after a nuclear reaction. This means that the sum of the mass numbers of the reactants must be equal to the sum of the mass numbers of the products. Therefore, the total number of nucleons is conserved in a nuclear reaction.
So, the law of conservation of nucleon number says that the total number of nucleons (protons and neutrons) is conserved before and after the reaction.
Calculate the root-mean-square (rms) in m/s for an NO2 molecule at 95°C.
The root mean square velocity of nitrogen molecules at 25°c is 515 m/s.
What is the root mean square?The square root of the mean square, or the arithmetic mean of the squares of a particular collection of numbers, is referred to as the root mean square (RMS or rms).
Root Mean Square, or RMS The d.c. current/voltage that dissipates the same quantity of power as the average power wasted by the alternating current/voltage is represented by the current/voltage of the alternating current/voltage.
One kind of mean is the root mean square. Since the squaring turns all of the numbers into non-negative numbers, it is helpful when attempting to determine the average "size" of numbers where the sign is irrelevant. Calculating a collection of integers' standard deviation using the root mean square is the most typical application.
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93.2 mL of a 2.03 M potassium fluoride (KF) solution is diluted to a total volume of 4.01 L what will be the molarity of the diluted solution
The molarity of the diluted solution is 0.047 M. Molarity is commonly used in chemistry to quantify the concentration of a solute in a solution and to calculate the amount of reactants required for a chemical reaction.
What is Molarity?
Molarity is a unit of concentration that measures the number of moles of a solute dissolved in one liter of a solution. It is expressed in units of moles per liter (mol/L or M). For example, a solution with a molarity of 0.5 M contains 0.5 moles of solute per liter of solution.
To find the molarity of the diluted solution, we can use the equation:
M1V1 = M2V2
Where:
M1 = initial molarity of the solution
V1 = initial volume of the solution
M2 = final molarity of the solution
V2 = final volume of the solution
We can rearrange the equation to solve for M2:
M2 = (M1V1) / V2
Plugging in the given values, we get:
M2 = (2.03 M x 93.2 mL) / 4.01 L
M2 = 0.047 M
Therefore, the molarity of the diluted solution is 0.047 M.
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Answer:
0.047
Explanation:
acellus
1. What is the volume of a solution that has a density of 0.75 g/mL and a mass of 164 g?
The density of a substance is defined as its mass per unit volume. Therefore, we can use the formula:
density = mass / volume
to find the volume of the solution.
Rearranging this formula, we get:
volume = mass / density
Substituting the given values, we get:
volume = 164 g / 0.75 g/mL
volume = 218.67 mL
Therefore, the volume of the solution is 218.67 mL
Answer:the mass of the sample is 90 grams.
Explanation:
PLEASE ANSWER ASAP
A) Calculate the molecular formula of a compound with an empirical formula of P2O5 and a molar mass of 283.88 g/mol.
B) Calculate the empirical formula of a compound containing 52.14% carbon, 13.12% hydrogen, and 34.73% oxygen.
Answer:
P4O10
Explanation:
When carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation:
CO2 + H2O → H2CO3.
If 495 milliliters of carbon dioxide at 25°C and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid?
Use the periodic table and the ideal gas resource.
The theoretical yield of carbonic acid is 12 %.
What is carbon dioxide ?
One part carbon and two parts oxygen make up the gas called carbon dioxide. Its usage by plants to create carbohydrates during a process known as photosynthesis makes it one of the most significant gases on the planet.
What is reaction ?
The transformation of one or more reactants into one or more new products is referred to as a chemical reaction. Substances are made of chemical constituents or compounds. The transformation of one or more reactants into one or more new products is referred to as a chemical reaction. Substances are made of chemical constituents or compounds.
Therefore, The theoretical yield of carbonic acid is 12 %.
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Lightning struck a tree, causing it to break and crash to the ground. The tree broke off 12 feet above the ground and the broken part was 20 feet long. The broken tree formed a right triangle. Determine how far the tip of the tree is from the base of the tree.
Distance =_______ ft.
Distance 11.143 ft or thereabouts is Distance roughly how far the tree extends from its tip to its base.
How Far Is It?Distance is the sum of an object's movements, regardless of direction. Distance can be defined as the amount of space an object has covered, regardless of its starting and ending position.
We obtain a quadratic equation by simplifying and expanding the left side:
2y^2 - 288y + 144 = 0
The quadratic formula is used to solve for y, and the result is: y = [288 (2882 - 4(2)(144)]
/(2(2))
y = [288 ± √58368]
y = 0.857 ft or /4 y = 84 foot
The only viable answer is: y 0.857 ft since y cannot be higher than 12 ft (the whole height of the tree).
The result of changing this number for y in the equation x + y = 12 ft is: x + 0.857 ft = 12 ft x 11.143 ft
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A doctor's order for 2.21 g of Keflex is available as 250 mg tablets. How many tablets of Keflex are needed? Please remember to include the correct unit with your answer.
Answer:
9 tablets.
Explanation:
2.21gg is 2210mg
2210/250= 8.84
what are the cell called and functions
The cell organelles in the diagram are lysosome and nucleus.
What is an Organelle?This is referred to as a small structure in a cell that is surrounded by a membrane and has specific types of functions based on their respective properties.
The nucleus is a type of organelle which is involved in the control of the activities of the cells such as controlling of the genetical information of the cell and thus the heredity characteristics of an organism and control of the protein and enzyme synthesis. Another organelle is referred to as the lysosomes which functions as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself.
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Help PLEASE NEED THIS ASAP
Lab Thermal Energy Transfer Lab Report
What is the purpose of the lab , the importance of the topic, and the question you are trying to answer?
What is your hypothesis (or hypotheses ) for this experiment?
What methods are you using to test this ( or each ) hypothesis?
Locate the data and observations collected in your lab guide. What are the key results? How would you best summarize the data to relate your findings
Do you have quantitative date (numerical results or calculations)? Do you have qualitative data ( written observations and descriptions )? How can you organize this data for your report
What do the results indicate
If you constructed graphs what trends do they indicate in your data
Were there any problems with the experiment or the methods? Did you have any surprising results?
What do the results tell you about your hypothesis?
How does the data support your claim above?
If you could repeat the experiment and make it better what would you do differently and why?
Answer:
The purpose of the lab is to study thermal energy transfer and its effects on different materials. The topic is important because understanding thermal energy transfer is essential to many fields, including engineering, physics, and chemistry. The question you are trying to answer may be something like "How does thermal energy transfer affect the temperature of different materials?"
Your hypothesis may be something like "Materials with high thermal conductivity will transfer heat more efficiently than materials with low thermal conductivity."
To test this hypothesis, you may use a setup where you have a heat source, a temperature sensor, and various materials with different thermal conductivities. You would measure the temperature changes of the materials as they are heated and cooled.
The key results of your lab may include the temperature changes of each material over time, the rate of heat transfer, and any observations about the behavior of the materials during the experiment. To summarize the data, you may create graphs or charts that show the temperature changes of the materials over time.
You may have quantitative data such as temperature readings and calculations of heat transfer rates, as well as qualitative data such as observations of the behavior of the materials during the experiment. You can organize this data in tables, graphs, and written descriptions.
The results may indicate that materials with higher thermal conductivity do transfer heat more efficiently, as your hypothesis predicted.
If you constructed graphs, you may observe trends such as a steeper slope for materials with higher thermal conductivity or a plateau in temperature once a material reaches its maximum heat capacity.
Possible problems with the experiment may include equipment malfunctions or inaccuracies in temperature readings. Surprising results may include unexpected temperature changes or behavior of certain materials.
The results may support your hypothesis and indicate that materials with high thermal conductivity transfer heat more efficiently.
The data supports your claim by showing clear temperature changes and rates of heat transfer for each material.
If you could repeat the experiment, you may try using different materials or adjusting the setup to control for potential confounding factors. For example, you may try using materials with similar heat capacities or reducing heat loss during the experiment.
Explanation:
Existen los super-genes.
Group of linked genes acting as an allelic unit due to the suppression of crossing-over is called supergene.
What is meant by a supergene?Chromosomal region encompassing multiple neighboring genes that are inherited together because of close genetic linkage is called supergene.
The best examples of supergenes are the morphologically and genetically distinct sex chromosomes which has evolved independently in many groups of animals and plants. Sex chromosomes evolve from autosomes via mutation that causes its bearers to develop into a male or female.
Supergenes arise following the establishment of mutations at minimum of two sites, followed by sequential accumulation of additional mutations.
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Note: The question given on the portal is incomplete. Here is the complete question.
Question: What is the meaning of supergene?
10.Henry is picking up a load identified as UN1449. According to Schedule 1, what is its subsidiary class?
UN1449 is a UN number that is used to identify a specific hazardous material or substance during transportation. To determine the subsidiary class of UN1449, we need to consult the relevant Schedule 1 of the UN Model Regulations or the applicable national regulations.
What are the properties and characteristics of hazardous materials?The subsidiary class of a hazardous material is determined by its properties and characteristics, such as its physical state, chemical composition, toxicity, flammability, and reactivity. These properties help to identify the potential risks and hazards associated with the material and inform the appropriate measures for safe handling, storage, and transport.
In general, the subsidiary class of a hazardous material is indicated by a numerical code following the primary class, such as Class 3, Flammable Liquids, Packing Group II (UN1263). However, the exact classification and labeling requirements for hazardous materials depend on various factors, including the mode of transport, quantity, packaging, and destination.
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Upgrading the usually speeds up the computer, while adding a(n) will increase the system’s storage capacity. Additional can improve the sound or video quality.
The statement is incomplete, but I assume the missing word is "graphics card" or "GPU" and upgrading the usually speeds up the computer.
Why adding a Graphics card can improve sound or video quality?
Adding a dedicated graphics card can indeed improve the sound or video quality by offloading the processing of graphics-intensive tasks from the CPU to the GPU. This can result in smoother video playback, faster rendering of 3D graphics, and improved overall system performance.
It's also worth noting that upgrading other components, such as the RAM or CPU, can also improve system performance, not just the speed of the computer. Adding more RAM can help with multitasking and running memory-intensive applications, while upgrading the CPU can improve overall processing power and speed.
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What mass of glucose can be produced from a photosynthesis reaction
6 CO2(g) + 6 H2O(l) →
C6H12O6(aq) + 6 O2(g)
that occurs using 11.5 mol CO2?
Answer in units of g.
345.53 g of glucose can be produced from the given reaction, using 11.5 mol of CO2.
What is Photosynthesis Reaction?
Photosynthesis is a process by which plants, algae, and some bacteria convert carbon dioxide (CO2) and water (H2O) into organic compounds, such as glucose, using sunlight as the source of energy.
6 CO2 + 6 H2O + energy (sunlight) → C6H12O6 (glucose) + 6 O2
From the balanced equation, we know that 6 moles of carbon dioxide react to form 1 mole of glucose. Therefore, we can calculate the moles of glucose produced from 11.5 moles of CO2:
moles of glucose = 11.5 mol CO2 / 6 mol CO2 per mole of glucose = 1.9167 mol glucose
Next, we can use the molar mass of glucose to calculate the mass of glucose produced:
mass of glucose = moles of glucose x molar mass of glucose
mass of glucose = 1.9167 mol x 180.156 g/mol
mass of glucose = 345.53 g
Therefore, 345.53 g of glucose can be produced from the given reaction, using 11.5 mol of CO2.
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Find the molar mass of BeCo3
Answer:
To find the molar mass of BeCo3, we need to find the atomic masses of each element and add them together in the correct ratio:
Be: 9.01 g/mol
Co: 58.93 g/mol
O: 16.00 g/mol (there are three oxygen atoms)
Molar mass of BeCo3 = (1 x Be atomic mass) + (1 x Co atomic mass) + (3 x O atomic mass)
Molar mass of BeCo3 = (1 x 9.01 g/mol) + (1 x 58.93 g/mol) + (3 x 16.00 g/mol)
Molar mass of BeCo3 = 9.01 g/mol + 58.93 g/mol + 48.00 g/mol
Molar mass of BeCo3 = 115.94 g/mol
Therefore, the molar mass of BeCo3 is 115.94 g/mol.
Injuries can also provide a blank of the suspect
Moreover, injuries may offer a hint or description of the culprit. The type and location of the injury may give away information about the suspect's physical attributes, such as height, weight, or age.
What do the injuries provide?Injuries can also reveal the suspect's method of operation, including whether they are right- or left-handed or if they used a certain kind of tool or weapon. To learn as much as they can about the crime and the parties involved, it is crucial for detectives to thoroughly examine any wounds that victims or suspects may have left behind.In forensic science, injuries can play a significant role in establishing the cause and manner of death or in locating the criminal. Investigators may be able to better understand the circumstances around a crime and recreate what actually happened with the help of the location and type of injury. Furthermore, the existence or absence of injuries can be used to support or refute witness accounts and other pieces of evidence.learn more about forensic science here
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What did Ernest Rutherford’s gold foil experiment demonstrate about atoms?
Answer:
Explanation:
Rutherford's gold foil experiment revealed that most of the alpha particles went right through the gold foil but only a couple got deflected, demonstrating that the atom has mostly empty space with a small, hard, positively charged nucleus. Because of this, Rutherford proposed the nuclear model of the atom.
Answer:
Hope this helps
Explanation:
Rutherford took a thin gold foil and made alpha race particles to pass through it. He saw that most of the particle passed straight through the gold foil . But some deflected in small angles and 1 in 12000 particles deflected/rebounded back.
These observation made Rutherford conclude that-
- Most of the place inside an atom is empty because particles passed straight through.
- some particles deflected in small angles meaning the positive charge in an atom occupies very less space.
Compare myths and folklore, specifically the types of content they cover and how they are shared in a society. Which do you believe is culturally meaningful?
What I have so far.
myth is a story that is usually about a sacred person, while folklore is a group of fictional tales about people or animals. Superstitions and unfounded beliefs are key elements in the folklore tradition.
Really need help with the second part.
specifically the types of content they cover and how they are shared in a society. Which do you believe is culturally meaningful?
Folklore is a compilation of made-up stories about people or animals, as opposed to myth, which has as its central theme the origins of a people and is frequently sacred. Important components of the folklore practice include superstitions and unfounded notions.
What cultural connections do myths and folklore have?
A society's myths and folklore are frequently the foundation upon which its culture is constructed. The origins of most cultural practices and beliefs can be found in the myths of a community. The moral limits and fundamental rules for how members of a community should live are established by myths and legends.
Folktales are regarded as tales that have been handed down to current generations from the ancestors of a specific group of people. These typically offer a lesson. On the other hand, a myth is a traditional tale from early history or one that explains a natural occurrence, often involving supernatural entities.
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Imagine that you work in a crime lab, and the police bring to you a sample of a white powder that they believe to be cocaine (C17H21NO4). When you carry out a combustion analysis on a 32 mg sample, you find that the sample contained 21.9 mg of carbon, 2.5 mg of hydrogen, 2.3 mg of nitrogen, and 5.3 mg of oxygen. What is the empirical formula for the white powder? Is this consistent with the molecular formula for cocaine?
The empirical formula of the white powder is CH1.5N1O2.
Empirical formula calculation
To find the empirical formula of the white powder, we need to determine the ratios of the elements present in the sample. We can assume that the sample contains 100 g of the powder, and then convert the masses of each element to moles using their molar masses:
mass of C = 21.9 mg = 0.0219 g = 0.0018 mol
mass of H = 2.5 mg = 0.0025 g = 0.0025 mol
mass of N = 2.3 mg = 0.0023 g = 0.0017 mol
mass of O = 5.3 mg = 0.0053 g = 0.0033 mol
Next, we can divide each of the mole values by the smallest mole value to get the simplest whole number ratio of the elements:
C: 0.0018 mol / 0.0017 mol = 1.06 ≈ 1
H: 0.0025 mol / 0.0017 mol = 1.47 ≈ 1.5
N: 0.0017 mol / 0.0017 mol = 1
O: 0.0033 mol / 0.0017 mol = 1.94 ≈ 2
Therefore, the empirical formula of the white powder is CH1.5N1O2.
To check if this is consistent with the molecular formula for cocaine (C17H21NO4), we can calculate the molecular formula mass of the empirical formula and compare it to the molecular formula mass of cocaine:
Empirical formula mass = 13.5 g/mol (approximately)
Molecular formula mass of cocaine = 303.4 g/mol
The empirical formula mass is much smaller than the molecular formula mass of cocaine, so the empirical formula is not consistent with the molecular formula.
Therefore, this suggests that cocaine is a larger molecule, made up of many repeating units of CH1.5N1O2. To determine the molecular formula of cocaine, we would need additional information, such as the molecular mass of the compound.
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How many grams of NaOH reacted
When 28g of Fe(OH)₃ are made in this reaction then 31.4g of NaOH forms.
What is Mole concept?
The mole concept is a convenient method of expressing the amount of a substance.
Avogadro's number is the number of units in one mole of any substance and equals to 6 .02214076 × 1023. The units can be electrons, atoms, ions, or molecules.
No. of moles is defined as a particular no. of particles that we can calculate with the help of Avogadro’s number.
Given,
Mass of Fe(OH)₃ = 28g
We know that Molecular mass of NaOH = 40g
Molecular mass of Fe(OH)₃ = 106.8g
According to the equation given in question,
3 moles of NaOH forms 1 mol of Fe(OH)₃
Hence, 40×3 = 120g of NaOH forms 106.8g Fe(OH)₃
1g Fe(OH)₃ will formed by = 120÷106.8 g NaOH = 1.12g
28g of Fe(OH)₃ will formed by = 1.12×28 = 31.4g NaOH
Therefore, When 28g of Fe(OH)₃ are made in this reaction then 31.4g of NaOH forms.
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3. Write the electron arrangement for the following atoms and ions.
A. Si
B. Ne
C. B³+
D. C1¹-
Answer & xplanation:
A. The electron arrangement for Si (atomic number 14) is: 1s² 2s² 2p⁶ 3s² 3p².
B. The electron arrangement for Ne (atomic number 10) is: 1s² 2s² 2p⁶.
C. B³+ is a cation, which means it has lost three electrons compared to neutral boron (B). Therefore, its electron arrangement is: 1s² 2s² 2p¹.
D. Cl¹⁻ is an anion, which means it has gained one electron compared to neutral chlorine (Cl). Therefore, its electron arrangement is: 1s² 2s² 2p⁶ 3s² 3p⁶.
what is the ionization constant for a 0.10 mole/dm3 of ethanoic acid solution which has a ph of 2.88
The ionization constant (Ka) for a 0.10 M solution of ethanoic acid with a pH of 2.88 is [tex]5.82 * 10^(^-^5^)[/tex]
What does equilibrium constant mean?The ratio of reactant to product amounts that is used to predict chemical behaviour is the definition of the equilibrium constant for a chemical process.
Ka = [H+][A-] / [HA]
where [H+] is the concentration of hydrogen ions, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.
For ethanoic acid (also known as acetic acid), the ionization reaction is:
CH3COOH + H2O ⇌ CH3COO- + H3O+
pH = -log[H3O+]
The Ka expression can now be written as:
[tex]Ka = (x)^2 / (0.10 - x)[/tex]
At equilibrium, the value of x is very small compared to 0.10 M, so we can make the approximation that 0.10 - x ≈ 0.10.
Therefore, we can simplify the Ka expression to:
[tex]Ka = x^2 / 0.10[/tex]
To solve for x, we can use the equilibrium concentration of [H3O+] we calculated earlier:
[tex]x = [H3O+] = 7.68 * 10^(^-^3^) M[/tex]
Substituting this value into the simplified Ka expression, we get:
[tex]Ka = (7.68 * 10^(^-^3^))^2 / 0.10 = 5.82 * 10^(^-^5^)[/tex]
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The mass of the beaker and watch glass: 57.880g
the mass of the beaker + watch glass +sample: 59.993g
The mass of the beaker + watch glass+ sample after first heating : 59.710
Mass of Sample = 59.993 - 57.880 = 2.113 g
Mass of Sample after 1st Heating = 59.710 - 57.880 = 1.83 g
Mass of Water Removed = 2.113 - 1.83 = 0.283 g
Mass of Sample after 2nd Heating = 59.7 - 57.88 = 1.82 g
Mass of Water Removed = 1.83 - 1.82 = 0.01 g
Total Mass of Water lost = 0.293 g
Moles of Water lost = 0.293 / 18 = 0.01628
Mass of Anhydrate = 1.82 g
Now check the molar mass of each hydrate:
CuSO4.5H2O = 159.61 g/mol
ZnSO4.7H2O = 287.58 g/mol
BaCl2.2H2O = 244.26 g/mol
MgSO4.7H2O = 246.47 g/mol
Now, Check the mole ratio of Anhydrous Salt : Water to get the required stoichiometric coefficient of H2O.
For BaCl2.2H2O,
Answer: BaCl2.2H2O
What is anhydrous salt?
An anhydrous salt is a chemical compound that does not contain water molecules as part of its crystal structure. It is the opposite of a hydrated salt, which contains a specific number of water molecules within its crystal structure. Anhydrous salts are usually formed by heating hydrated salts to a high temperature to drive off the water molecules. Anhydrous salts are often used in chemical reactions, as they can react more efficiently than hydrated salts due to their greater purity and stability. Some common examples of anhydrous salts include anhydrous sodium sulfate, anhydrous calcium chloride, and anhydrous magnesium sulfate.To know more about anhydrous salt, click the link given below:
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While experimenting with acid-base reactions, a student mixes lithium hydroxide (LiOH) and hydrofluoric acid (HF) together. The products of the reaction are
and
.
Answer:
hyrdrifluoric acid
Explanation:
HELP! Which of the following factors will only affect the reaction rate of a solid?
A. Temperature
B. Concentration
C. Surface area
D. Catalyst
Answer:
A.Temperature
Explanation:
3. During an experiment, 98 g of water is used in the Styrofoam cup. The initial temperature
of water was 23.7°C. A 39.9-g piece of metal with initial temperature of 100.3°C (after
removing from the boiling water) is added to the calorimeter. The final temperature of water
was 28.2°C.
Calculate the specific heat of the metal.
Identify the metal.
Calculate the percent of error.
Answer:
Explanation:
To solve this problem, we can use the equation:
q = mcΔT
where q is the heat absorbed or released, m is the mass of the substance, c is the specific heat, and ΔT is the change in temperature.
First, we can calculate the heat absorbed by the water:
q_water = (98 g) (4.18 J/g°C) (28.2°C - 23.7°C) = 1938.4 J
Next, we can calculate the heat released by the metal:
q_metal = -q_water = -1938.4 J
The negative sign indicates that the metal released heat to the water.
We can rearrange the equation to solve for the specific heat of the metal:
c = -q_metal / (mΔT)
c = -(-1938.4 J) / (39.9 g) (100.3°C - 28.2°C)
c = 0.387 J/g°C
Therefore, the specific heat of the metal is 0.387 J/g°C.
To identify the metal, we can compare its specific heat to known values for different metals. From the specific heat values of common metals, we can see that the metal is most likely aluminum (specific heat of 0.902 J/g°C), as it has a much lower specific heat than copper, iron, or lead.
To calculate the percent error, we can use the formula:
percent error = (|experimental value - accepted value| / accepted value) x 100%
The accepted specific heat of aluminum is 0.902 J/g°C.
percent error = (|0.387 J/g°C - 0.902 J/g°C| / 0.902 J/g°C) x 100%
percent error = 57.1%
Therefore, the percent error is 57.1%.
What is a precipitate?
a) insoluble ionic compound
b) metallic solid
c) soluble ionic compound
d) gaseous molecular compound
Predict the missing component in the nuclear equation.
Answer:
B
Explanation:
this equation shows an alpha decay
7 characteristics of living things
Answer: The 7 Characteristics of Living Things are
Movement, Respiration, Sensitivity, Growth, Reproduction, Excretion, and Nutrition
Explanation:
Movement: Change, Position, or place of an organism or part of an organism
Respiration: Break down food in cells and release energy
Sensitivity: Sense Respond, changes in the environment (Stimuli)
Growth: Increase the Size, Mass of an organism By increasing cell number and cell size
Reproduction: Produce offspring to prevent extinction of species
Excretion: Removal Tox Materials, waste products of metabolism, substance in Excess by chemical reactions in cells (respiration)
Show that the density of a 5kg solid cylinder that is 10cm tall with a radius of 3cm is 17.7g/cm^3
The density of the solid cylinder is calculated to be as approximately 17.7 g/cm³.
What is meant by density?The mass per unit of volume of a substance is known as density and symbol that is mostly used for density is ρ.
As the formula for the density of an object is:
density = mass / volume
volume = π x radius² x height
volume = π x (3cm)² x 10cm
volume = 282.74 cm³
mass = 5kg x 1000g/kg = 5000g
density = mass / volume
density = 5000g / 282.74 cm³
density ≈ 17.7 g/cm³
Therefore, the density of the solid cylinder is approximately 17.7 g/cm³.
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