Determine the percent composition of sulfur in sulfuric acid.

Q: Cyclohexane C6H12  (given: density= 0.77g/ml) Mass:84.9 g How many moles, molecules and total atoms…

A: I am providing you an image where you can have all the explanations related to this problem please…

Q: The ratio of each element's mass in a compound changes when the size of the sample changes.

A: In this question we have to tell that above statement is true or false with explanation.

Q: Never heat the mixture until the distillation flask is dry as this may cause an explosion. O True O…

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Q: Calculate the mass percentage composition of aluminum in the compound AL(NO3)3. Please report the…

A: Assuming we have 1 mole of Al(NO3)3  Hence mass of Al(NO3)3  = moles X molar mass = molar mass X 1…

Q: Determine the correct number of significant figures the mass (g) of a mineral that is 20.67% by the…

A: Given that the mass percent of a mineral in titanium dioxide is 20.67 percent and the Mass of…

Q: A student weighs an empty beaker at 81.702 g. A sample of MgSO4·??H2O is added to the beaker, and it…

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Q: One mole of oxygen gas has a mass of 6.022 x 1023 16.0 32.0 none of the above 8.

A: One mole of oxygen gas is equal to = O2 (two atoms of oxygen ) One oxygen atom = 16 g

Q: A student weighs an empty beaker at 85.301 g. A sample of Na2SO4·??H2O is added to the beaker, and…

A: Mass of empty beaker = 85.301 g  Mass of beaker + hydrated salt = 86.607 g  Mass of beaker +…

Q: The density of water is 1.00 g/mL at 4 degrees Celsius. How many water molecules are present in…

A: First of all calculate the mass of water by using given volume and density of water. Then calculate…

Q: Calculate the number of nitrogen atoms in a 110.0 g sample of dinitrogen tetroxide (N,O,). Be sure…

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Q: Calculate the mass percent composition of nitrogen in CO(NH2)2. Express your answer using four…

A: The percent composition of a component present in the mixture is calculated by dividing the mass of…

Q: Fill in the coefficients needed to balance each equation.

A: A balance equation has the equal number of atoms on the left hand side as well as on the right hand…

Q: How many hydrogen atoms are in each of the following:   Part A: C2H5OH Express your answer as an…

A: Atom is the smallest unit of a substance. Atoms combine to form a molecule which is a stable entity.…

Q: Assume that the ratio of moles of Cl to moles of Cu are 1.84.  If we can represent the formula by…

A: The ratio of moles of any two substances in a balanced chemical reaction is called molar ratio.…

Q: How many moles of Cu(NO3)2 are in 3.4 x 1022 molecules? Please have your answer in decimal format…

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Q: Analysis of a 31.7 g sample of water revealed a mass percent for lead of 3.3%. Calculate the number…

A: Analysis of 31.7 g of water was done and the mass percentage of lead was found to be 3.3%,

Q: A certain organic compound has the formula C8H13O2. A sample of this compound weighs 5.89 grams.…

A: Mass of C8H13O2 = 5.89 g Molar mass of C8H13O2 = 141.184 g/mol Moles of C8H13O2 =MassMolar mass=5.89…

Q: 1 mole of 63Cu atoms has a mass of about 63 grams. Explain why the number below Cu on the periodic…

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Q: If a sample of urea, CH4N2O, is 86% pure, what is the percent by mass of nitrogen in this sample…

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Q: Chocolate Chunk Raisin Oatmeal Cookies Recipe Ingredients 1.806 x 1023 molecules white sugar 1 1/5…

A: Molecular weight of white sugar (C12H22O11) = 342 Molecular weight of baking soda (NaHCO3) = 84…

Q: Chromium metal is obtained by heating chromium(III) oxide with carbon. Calculate the mass percent of…

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Q: Calculate the percent composition by mass of calcium sulfite, CaSO3 2. Calculate the percent…

A: To Solve this problem we will calculate the percentage composition of each element present in given…

Q: What is the percent by mass of hydrogen in Ca(OH)2? Group of answer choices 2.72 % 1.36% 21.6 %…

A: % by mass basically tells about the concentration of one element present in the mixture. The formula…

Q: How many molecules are in 13.7 moles of water? All answers have units of molecules of water 8.25 х…

A: We need to find molecules of water in 13.7 moles water.

Q: A pure sample of an organic molecule has the formula CxHyOz. If x = 10, y = 22, and z = 2. Calculate…

A: • The formula of a  pure sample of an organic molecule is CxHyOz      •Since, the value of x = 10, y…

Q: 1: How many carbon atoms are present in a mole of ¹2C? 12 Express your answer using four significant…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the number of nitrogen atoms in a 90.0 g sample of hydrazine (N,H,). Be sure your answer…

A: The number of moles is calculated using following equation: number of moles=given mass molar mass…

Q: SOLUTE (NONELECTROLYTE) SOLVENT (WATER) Mass (g) MW (g/mol) Density (g/mL) 60 700 200 18 1.5 1.0

A: Answer: In this question we have to find out the value of different concentration terms with the…

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A: The number of water molecules present inside a crystal is known as water of crystallization.The…

Q: A compound contains arsenic and oxygen as the only elements. A 1.626 g sample of the compound…

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Q: How many formula units are in 30.912 g of potassium permanganate? Give answer to the correct number…

A: A numerical problem based on formula unit, which is to be accomplished.

Q: Convert 1.80 x 1024 formula units of copper (II) nitrate to moles. Express the answer by rounding to…

A: We know that ; 1 mol of substance contain  = 6.022 x 1023 formula units   By this we can calculate…

Q: You analyze a sample of a compound you made in the lab and find that it has a percent composition by…

A: Answer: Empirical formula is C4H2O and three answers from the  given list are C4, H2, and O.

Q: If the percent potassium in the compound was determined to be 23.4 %, would the compound be…

A: % of a particular compound =( weight of a particular atom / total molecular weight)×100

Q: Calculate the percent by mass of S in each of the following compounds Part A. Na2SO4, sodium sulfate…

A: Hello. Since your question has multiple sub-parts, we will solve the first three sub-parts for you.…

Q: Be sure to answer all parts. How many H atoms are in 84.9 g of isopropanol (rubbing alcohol), C3H,0?…

A: We have to calculate the number of H atoms in 84.9 g of isopropanol.

Q: How many atoms of fluorine are in 1.1E0 moles of CF4? Respond with the correct number of significant…

A: Given, The number of atoms of fluorine are in 1.1E0 moles of CF4 is :

Q: How many molecules are there in 47.5 g of PF3? You will need to divide your answer by 1.0x10^23.

A: Number of moles of a substance is equal to the mass of substance divided by its molar mass.…

Q: Find the percentage by mass of Cl in CaCl2 if it is 36.1% Ca by mass. (Round your answer to one…

A: (1) The percentage by mass of Cl is 63.8% in CaCl2 if it is 36.1% Ca by mass.      (2) the…

Q: Which of the following is equal to 6.022 x 10^23 molecules? * 31.98 g Q_2

A: We will choose Correct statement

Q: Find the percentage by mass of oxygen (O) in N2O3 if it is 36.9% nitrogen (N) by mass. (Round your…

A: Percentage by mass of an element in a given compound can be calculate by the formula,     percentage…

Q: O STOICHIOMETRY Using the Avogadro Number An oxygen atom has a mass of 2.66 x 10 - 23 g and a glass…

A: We are given mass of one atom and we have to calculate mass of one mole and hence calculate how many…

Q: Calculate the formula mass of N2H4 to 2 decimal places.

A: To calculate the formula mass of N2H4.

Q: 1. Vitamin C has the formula C,H¸Og. Calculate the number of vitamin C molecules present in a 0.250…

A: The molecular formula of the vitamin C is = C6H8O6 The mass of vitamin C is = 0.250 g The number of…

Q: How many carbon atoms are present in a mole of 12C? Express your answer using four significant…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: What is the percent composition of oxygen in aluminum nitrate?     6.58%     67.60%     12.67%

A: Aluminium Nitrate is Al(NO3)3 Atomic mass of Al = 27 g mol-1 Atomic mass of N = 14 g mol-1 Atomic…

Q: How many helium atoms are there in a helium blimp containing 534 kg of helium?   Express the number…

A: Mole= mass/molar mass  Molar mass of Helium =4g/mol So first Calculate mole Then atoms…

Q: A pure sample of an organic molecule has the formula CxHyOz. If x = 11, y = 13, and z = 2. Calculate…

A: The molecular formula of the given compound is CxHyOzthat is C11H13O2.

Q: Analysis of a 40 g sample of water revealed a mass percent for lead of 3.23%. Calculate the number…

A: Percentage by mass of the substance in the solution mixture can be expressed as the ratio of mass of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.