Molar masses PRACTICE TEST WITH VERIFIED SOLUTIONS.

How does the number of molecules in 1 mol of oxygen compare with the number of molecules in 1 mol of nitrogen? 1 mol of oxygen has fewer molecules. 1 mol of oxygen has more molecules. Each sample has the same number of molecules. The molecules cannot be compared without knowing the mass. Each sample has the same number of molecules What is the molar mass of CHCl3? 48.47 g/mol 83.92 g/mol 119.37 g/mol 121.39 g/mol 119.37 g/mol Which is the formula mass of (NH4)2SO4? 96.07 amu 114.12 amu 116.17 amu 132.17 amu 132.17 amu What is the molar mass of Al2(SO4)3? 150.03 g/mol 278.03 g/mol 342.17 g/mol 450.09 g/mol 342.17 g/mol What is the molar mass of a substance? the mass in grams of one mole of a substance the number of particles in one gram of a substance the number of moles in one gram of a substance the mass in grams of one particle of a substance the mass in grams of one mole of a substance Which is the molar mass of H2O? 10.02 g/mol 16.00 g/mol 17.01 g/mol 18.02 g/mol 18.02 g/mol How are a mole and a dozen similar? Each represents a certain mass of material. Each names a given number of objects. Each identifies a specific volume. Each measures a given number of amus. each names a given number of objects Which is the molar mass of BF3? 10.81 g/mol 29.81 g/mol 48.81 g/mol 67.81 g/mol 67.81 Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? A mole of iron has more atoms. They both have the same mass. A mole of magnesium has more mass. They both have the same number of atoms. They both have the same number of atoms