Caroline knows the amount of a compound in moles. To find the number of molecules in the given sample of her compound, which of these values must also be used in her calculation? O Avogadro's number O atomic mass of each element in the compound molecular mass of the compound mass of the sample in grams

Q: compound

A: The first step is to calculate the molar mass of KNO3. It can be calculated as follows: Molar mass=…

Q: What is a mole of a substance? O alaboratory spoon full of a substance O The amount of a substance…

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Q: Describe how the knowledge of the percent compositionby mass of an unknown compound can help us…

A: Percent (%)composition by mass helps us in identification of the compound by comparing the relative…

Q: Question attached

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: How many molecules of carbon tetrachloride are present in 3.57 moles of this compound?

A: Given information: Number of moles of carbon tetra-chloride = 3.57 mol

Q: (a) Does the percent by mass of each element in a compounddepend on the amount of compound? Explain.…

A: a) In a molecule of calcium chloride, there is one calcium atom and two atoms of chlorine. The total…

Q: a. How many grams of barium carbonate, BaCO3, are present in 1.73 moles of this compound? grams b.…

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Q: What number of molecules (or formula units) are present in 2.93 g of each of the following…

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Q: A compound contains only carbon and hydrogen and has aformula mass of 28.06 amu. What is its…

A: Given data: Molar mass of the compound = 28.06 amu

Q: How many MOLECULES of dioxygen difluoride are present in 4.66 moles of this compound ?

A: given, moles of dioxygen difluoride = 4.66 moles

Q: A compound has the chemical formula CaX2, where X is an unknown nonmetal. The percent by mass of Ca…

A: Percentage by mass of compound means if total compound is 100 g then that component has mass…

Q: Calculate the amount in moles of molecules for each substance listed. b. a sample of diphosphorus…

A: Given  Total number of atom = 4.91 × 1022 atom  Number of mole of molecules = ?

Q: The empirical formula of a group of elements is:      a. The simplest whole number ratio of atoms…

A: Empirical formula of any compound is defined as the simplest whole number ratio of atoms present in…

Q: A compound of molar mass 229 g/mol contains only carbon, hydrogen, iodine, and sulfur. The analysis…

A: The ratio of the mass of carbon to hydrogen = 6:1 The ratio of moles of carbon and hydrogen =

Q: A sample of the compound shown below contains 5.22 g of nitrogen. How many grams of oxygen does it…

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Q: How many atoms are in 15 g LİCIO,? number of atoms: How many ions are in 15 g LiCio,? number of…

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

Q: 2.3 (a) How many grams are there in one amu of a material? (b) Mole, in the context of this book, is…

A: A.M.U is defined as mass of One atom.

Q: Define a scope of Convert between moles of a compound and moles of aconstituent element

A: The conversion factor between moles of a compound and moles of constituent element has to be…

Q: thetr many years chloroform (CHCI3) was used as an inhalation anesthetic in spite of the fact the t…

A:

Q: The true value of a compound’s molar mass is 176.082 g/mol. You do an experiment and determine the…

A: Given that, The true value of a compound’s molar mass is 176.082 g/mol and the calculated molar mass…

Q: Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Sample 4.76 g C6H6 0.229 mol H2 O…

A: Mole concept of a Compound: One mole of compound is the mass of the compound weighing equal to the…

Q: Some of the formulas could be either molecular or empirical formulas; however, some can only be…

A: Which are among is the molecular formula ?

Q: A sample of 7.2 moles of the ionic compound, potassium dichromate, K2Cr2O7, is present. How many…

A: Explained as follows

Q: A 0.613 g sample of a covalent compound contains 3.13 × 1021 molecules. What is the molar mass (in…

A: We have 0.613 g sample of a covalent compound contains 3.13 × 1021 molecules . We have to calculate…

Q: How many oxygen atoms are in 19 molecules of tetraphoshorus decoxide (aslo known as phosphorus…

A: Given, molecular formula of phosphorus pentaoxide P4O10 , we are asked to determine total number of…

Q: What would the empirical formula be for a compound that contains only nitrogen and oxygen and is…

A: Find the solution below

Q: What is the relationship between the mass of a compound and the number of moles it represents?

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Q: Complete the table below for calculating the molar mass of the ionic compound chromium(II) fluoride…

A: Given Chromium(II)fluoride is given, the mass of each ion in 1 mole of Chromium(II)fluoride is to be…

Q: An element’s molar mass in grams per mole is numerically equal tothe element’s atomic mass in atomic…

A: An element's molar mass in g/mol  is numerically equal to the element's atomic mass in atomic mass…

Q: If 10 magnesium (Mg) atoms and 10 chlorine (Cl) atoms bump into eaxh othee, could they form a…

A:

Q: Analysis of a 20.0-gram sample of a compound containing only calcium and bromine indicates that 4.00…

A: given  mass of sample = 20 g mass of calcium = 4 g

Q: 10. What does Avogadro's number represent? a. the number of atoms in 1 mol of an element b. the…

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Q: Calculate the number of molecules in each of the following samples. (Remember from class that the…

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Q: What is the molar mass (g/mole) of cream of tartar (KHC4H4O6) find the mass of each atom and add…

A: The sum total of masses of all atoms in a molecule in grams amounts to the mass of 1 mole of that…

Q: The molar mass of a compound is the sum of the atomic molar masses for the elements in the compound,…

A: Given, The molar mass of a compound is the sum of the atomic molar masses for each element in the…

Q: How many atoms are present in 123 g of sodium cyanide (cyanide = CN-)?

A: Dear student since it is a multiple type question, according to guidelines here I am solving only…

Q: A student calculated the number of moles of carbon dioxide present in a 100.0 g sample of a gaseous…

A: Mass of sample = 100 g Number of mole of carbon dioxide present in sample = 0.30 mol

Q: A compound contains 12.8% carbon, 2.1% Hydrogen, and 85.1% bromine. Calculate the empirical formula…

A: Since the compound is having only carbon, hydrogen and bromine. Hence the empirical formula of the…

Q: A sample of a pure compound contains 68.4% chromium and 31.6% oxygen by mass. What is the empirical…

A: Let the mass of the pure compound be 100 g. Thus, mass of chromium in the compound is = 68.4 % x 100…

Q: What is the simplest or empirical formula of a compound which is found to have a mole ratio    of…

A: Given;

Q: A.How many molecules of nitrogen trifluoride are present in 2.13 moles of this compound?   B.How…

A: To convert molecules to mole divide by 6.02×10^23 and to convert moles to molecule multiply by…

Q: b.How many moles of dinitrogen tetrafluoride are present in 3.16x 10^22 molecules of this compound?…

A: Number of moles= 5.45×10-2 moles

Q: A compound the formula TeCln has a formula mass of 269.41 amu. What is the value for n in the…

A: TeCln formula mass = 269.41 amu Te formula mass = 127.6 amu Cl formula mass =  35.453 amu

Q: What other quantity of matter did Avogadro use to define the mole? O volume O temperature mass O…

A: We know no of moles=mass taken/molecular weight

Q: how many molecules of nitrgoen, N2 are found in 78.2g of N2? The atomic mass of nitrogen is…

A:

Q: A molecule is found to contain 50.0% by mass C, 5.61% by mass H, and 44.4% by mass O. What is the…

A: C = 50.0% H=5.61%  O= 44.4%

Q: A sample of oxygen gas has a mass of 33.1 grams. How many O2 molecules are there in the sample?

A: Here, we have to calculate number of molecules present in 33.1 g of oxygen.

Q: The molar mass is the mass of 6.022 x 1023 particles of matter. O True OFalse

A: We know that, Avogadro number =6.022 × 1023 partical/mol so,