Molar Masses Quiz exam with 100% Correct answers already graded A+

How does the number of molecules in 1 molecules of oxygen compare with the number of molecules in 1 molecules of nitrogen? Each sample has the same number of molecules. Magnesium and iron are metallic elements. How does a mole of magnesium compare with a mole of iron? They both have the same number of atoms. Which is the formula mass of (NH4)2SO4? 132.17 amu What is Avogadro's number? the number of atoms, molecules, ions, formula units, or other particles in a mole of a substance Which value gives the number of particles in 1 molecule of a substance? 6.02 1023 Na+ + Cl- NaCl Which statement best describes the relationship between the substances in the equation? The number of sodium ions is equal to the number of formula units of salt. In a classroom, which comparison would a teacher most likely use for describing a mole? a dozen eggs and a dozen jellybeans What is the molar mass of Al2(SO4)3? 342.17 g/mol Which statement best describes a mole? It contains 6.02 1023 particles of a given substance. Which is the molar mass of H2O? 18.02 g/mol Which best compares 1 mol of sodium chloride to 1 mol of aluminum chloride? Both are made up of 6.02 1023 formula units. Which is the molar mass of BF3? 67.81 g/mol How are a mole and a dozen similar? Each names a given number of objects.