2. Atoms & Elements

What is the formula weight (molar mass) of KBr, rounded to two decimal places?

What is the molar mass of AgCl?

What is the molar mass of NH_3?

What is the molar mass of copper(II) sulfate (CuSO_4)?

What is the percent by mass of calcium in CaBr2?

Which of the following is the correct molar mass for the compound FeSO_4?

What is the theoretical percent by mass of magnesium in magnesium oxide (MgO)?

What is the molar mass of sulfur dioxide (SO_2)?

Given that the molar mass of gold (Au) is 197 g/mol, how many atoms are present in a 3.00 g sample of gold?

Which statement best describes the relationship between an element's molar mass and its atomic mass?

How many atoms are present in one molecule of Na2SO4?

What is the molar mass of Na_2SO_4?

Which of the following is the molar mass of chlorine gas (Cl_2)?

What is the molar mass of glucose (C6H12O6)?

Which of the following is the molar mass of Na_2CO_3 (sodium carbonate)?