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The mass in grams of one mole of any substance is its molar mass. The molar mass of any element is numerically equal to its atomic mass. For instance, one mole of oxygen has a mass of 15.99g./mol One mole of fluorine gas has a mass of 18.99g/mol. To find the mass of a compound, you must add up the individual masses of its component elements. For example, table salt (NaCl) has two elements. The molar mass of sodium is 23g/mol. The molar mass of chlorine is 35.5g/mol. So when you add those together, you get the molar mass of salt, which is 58.5g/mol. This quiz will cover the computations of the molar mass of compounds. You will need a calculator and a periodic table. Select the best answer from the given choices.
What is the molar mass of silver nitrate? (AgNO3)
170 g/mol
710 g/mol
370 g/mol
172 g/mol
What is the molar mass of carbon dioxide?
24g/mol
28g/mol
44g/mol
48g/mol
What is the molar mass of hydrochloric acid?
36g/mol
26g/mol
38g/mol
24g/mol
What is the molar mass of sulfuric acid?
90 g/mol
109 g/mol
198 g/mol
98 g/mol
What is the molar mass of zinc chloride?
136.67 g/mol
136.4 g/mol
100.9 g/mol
316.4 g/mol
What is the molar mass of sodium?
3
45.5
28.93
23
What is the molar mass of table salt (NaCl)?
220.902 g/mol
58.443 g/mol
35,453 g/mol
116.886 g/mol
What is the mass of one mole of aluminum chloride (remember to determine the correct formula first)?
133.341g
116.87g
345.331g
98.341g
