Multiple Choice
What is the molar mass of sulfur dioxide (SO_2)?
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2. Atoms & Elements
Calculating Molar Mass
Multiple Choice
What is the molar mass of H_2?
A
1.01 g/mol
B
2.02 g/mol
C
28.02 g/mol
D
18.02 g/mol
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Verified step by step guidance1
Identify the elements present in the molecule H_2. Here, H_2 consists of two hydrogen atoms bonded together.
Find the atomic mass of a single hydrogen atom from the periodic table. The atomic mass of hydrogen (H) is approximately 1.01 g/mol.
Since there are two hydrogen atoms in H_2, multiply the atomic mass of hydrogen by 2 to get the molar mass of H_2.
Write the calculation as: \(\text{Molar mass of } H_2 = 2 \times 1.01 \text{ g/mol}\).
This result gives the molar mass of H_2, which is the sum of the masses of the two hydrogen atoms.
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