How many formula units are in a sample of NaCl that has a mass of 175 g?

Q: The mass of 5.15 moles of a compound is determined to be 298 g. What is the formula mass of the…

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Q: How many moles of NaCl are present in 100 g?

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Q: How many atoms are in 2.4 mol B?

A: Given : Moles of element B = 2.4

Q: A compound is found to contain 59.94 % carbon, 13.44 % hydrogen , and 26.62 % oxygen by mass. To…

A: In a given compound  % composition of carbon C = 59.94%  % composition of hydrogen H = 13.44% %…

Q: How many molecules are in 59.6 moles of CCI,? 4.

A: Given:  Moles of CCl4 = 59.6 moles

Q: How many molecules are contained in a 51g sample of water?

A: mass of sample of water (H2O) = 51 gNumber of water (H2O) molecules = ?Note:molar mass of water…

Q: 80 grams of sodium hydroxide contains how many molecules?

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Q: A sample that contains only carbon and hydrogen, and is sent for analysis. It is found to contain…

A: Given : Compound contains carbon and hydrogen. And mass percent of carbon = 94.70% Assuming 100 g of…

Q: How many moles of ammonium ions are in 6.955 g of ammonium carbonate?

A: Moles from the given mass can be calculated as follows; Moles = Given massMolecular mass…

Q: The number of moles of CH4 in 6.00 q is

A: Given: Mass of CH4 = 6.00 gRequired: Moles of CH4 = ?

Q: How many moles are equal to 12.8 grams ofCaO2

A: Moles can be calculated as follows

Q: For each of the following drugs, determine the mass of compound present for the given moles of each…

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Q: A substance was found to contain 65.95% barium and 34.05% chlorine by mass upon analysis. What is…

A: Given that mass percent of barium is 65.95 % and mass percent of chlorine is 34.05%.

Q: A compound is found to contain 38.65 % carbon , 16.25 % hydrogen , and 45.09 % nitrogen by mass. To…

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Q: A 21.8 g sample of water contains how many water molecules?

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Q: A compound is 54.53% carbon, 9.15% hydrogen, and 36.32% oxygen by mass. What is its empirical…

A: This question belongs to Mole concept. we have used formula  Mass % of an element = Mass of that…

Q: a compound that contains only carbon, hydrogen, and oxygen is 68.5% C and 8.63% H by mass. what is…

A: The compound is composed of carbon, hydrogen, and oxygen atoms. The empirical formula of the…

Q: What is the mass of 0.035 moles of acetic acid?

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

Q: A compound that contains only copper and chlorine contains 2.363 g copper and 2.637 g chlorine. What…

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Q: A compound is found to contain 64.80 % carbon, 13.62 % hydrogen, and 21.58 % oxygen by weight. What…

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Q: How many moles are equal to 2.40 x 1023 formula units of sodium chloride? Round to two decimal…

A: Since, Avogadro number (6.022 × 1023) of formula units are equal to 1 mole of any substance…

Q: How many moles of potassium sulfite are in 448 g of potassium sulfite?

A: Given data is as follows: The mass of the potassium sulfite = 448 g The moles of a substance can be…

Q: how many moles of HCI are in a sample of HCI with a mass of 126 g?

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Q: The empirical formula of a compound is CH. If the molar mass of this compound is about 52g, what is…

A: Given: The empirical formula of a compound: CH The molar mass of this compound = 52 g We have to…

Q: How many carbon atoms are in 0.268 g of carbon?

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Q: How many moles of ammonium ions are in 0.417 g of ammonium carbonate?

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Q: How many molecules of NO are in a 22.5 g sample of the compound?

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Q: what will be the number of molecules in one mole o2?

A: The number of moles of a compound can be determined by the number of moles of the compound and…

Q: what is the mass of chloride contained in 18.7 g of NH₄Cl

A: Given data  Mass of NH₄Cl = 18.7 g Find mass of Cl

Q: In an experiment, 3.2 moles of oxygen atoms reacted with 121.3 g of calcium to form a new compound.…

A: Atomic mass of oxygen atom = 16 g/mol  moles of oxygen atoms =3.2 moles  mass of oxygen atoms = 3.2…

Q: A sample of pure lithium nitrate contains 10.1% lithium by mass. What is the % lithium by mass in a…

A: Lithium nitrate contains 10.1% lithium by mass.

Q: Determine the number of moles (of molecules or formula units) in sample. 0.1187 g C8H18

A: The expression for determining the number of moles of any substance is as follows, Molar mass of a…

Q: How many moles are in 1.29g of NaCl ?

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Q: Molar mass of Calcuim Sulfate

A: Molar mass of a substance is equal to the sum of the molar masses of all its elements.

Q: How many atoms are present in 0.35 mol of Na?

A: Given : no. of moles of Na = 0.35 mol  To calculate :- number of atoms of Na

Q: How many molecules are in 31.3 moles of NH3

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Q: Mass of H20 is 2.9445 g Mass of CO2 is 7.1918 g Moles of H20 is 0.1634 Moles of CO2 is 0.1634

A: 1. atomic mass of H =1 g/mol, O = 16 g/mol, C = 12 g/mol molecular mass of H2O = 18 g/mol and CO2 =…

Q: the mass percent of magnesium in MgSO4.

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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.