How many moles of tungsten atoms are in 4.8  10 atoms of tungsten?

 

 

How many moles of silver atoms are in 1.8  10 atoms of silver?

 

 

How many atoms are in 0.075 mol of titanium?

 

 

How many molecules are in 2.10 mol CO?

 

 

How many atoms are in 3.5 moles of arsenic atoms?

 What is true about the molar mass of chlorine gas?

 What is the molar mass of AuCl₃?

 What is the molar mass of (NH)CO?

 What is the mass in grams of 5.90 mol CH?

 

 

What is the number of moles in 432 g Ba(NO)?

 

 

What is the number of moles of beryllium atoms in 36 g of Be?

 How many moles of CaBr are in 5.0 grams of CaBr?

 What is the mass of silver in 3.4 g AgNO?

 What is the mass of oxygen in 250 g of sulfuric acid, HSO?

 What is the volume, in liters, of 0.500 mol of CH gas at STP?

 What is the number of moles in 500 L of He gas at STP?

 What is the number of moles in 9.63 L of HS gas at STP?

 What is the density at STP of the gas sulfur hexafluoride, SF?

 The molar mass of a certain gas is 49 g. What is the density of the gas in g/L at STP?

 If the density of an unknown gas Z is 4.50 g/L at STP, what is the molar mass of gas Z?

 If 60.2 grams of Hg combines completely with 24.0 grams of Br to form a compound, what is the percent composition of Hg in the compound?

 What is the percent composition of chromium in BaCrO?

 If 20.0 grams of Ca combines completely with 16.0 grams of S to form a compound, what is the percent composition of Ca in the compound?

 What is the percent composition of carbon, in heptane, CH?

 What is the percent by mass of carbon in acetone, CHO?

 What is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?

 What is the empirical formula of a substance that is 53.5% C, 15.5% H, and 31.1% N by weight?

What is the percent composition of NiO, if a sample of NiO with a mass of 41.9 g contains 33.1 g Ni and 8.8 g O?

What is the percent by mass of hydrogen in aspirin, CHO?

Calculate the molecular formulas of the compounds having the following empirical formulas and molar masses: CH, 58 g/mol; CH, 78 g/mol; and HgCl, 236.1 g/mol.

Give three examples of methods of measuring the amount of something, and give an example of how one of these quantities can be converted to another type of quantity.

When determining the moles of a gas from the volume of that gas, why is it important that the volume be measured at STP?

The density of acetylene at STP is 1.17 g/L. The empirical formula of acetylene is CH. Describe how you can determine the molar mass of acetylene and its molecular formula if you know only its density at STP and its empirical formula.