Very Short Question and Answers - Molecular Mass
Q 1.
What is the molecular mass of water (H₂O)?
Ans:
18 u
Q 2.
Calculate the molecular mass of nitric acid (HNO₃).
Ans:
63 u
Q 3.
What is the formula unit mass of ZnO?
Ans:
81 u
Q 4.
Calculate the formula unit mass of Na₂O.
Ans:
62 u
Q 5.
What is the formula unit mass of K₂CO₃?
Ans:
138 u
Q 6.
What is the molecular mass of carbon dioxide (CO₂)?
Ans:
44 u
Q 7.
Calculate the molecular mass of methane (CH₄).
Ans:
16 u
Q 8.
What is the molecular mass of nitrogen gas (N₂)?
Ans:
28 u
Q 9.
What is the molecular mass of ammonia (NH₃)?
Ans:
17 u
Q 10.
Calculate the molecular mass of hydrogen gas (H₂).
Ans:
2 u