Multiple Choice
Which of the following compounds has the smallest molar mass?
1
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2. Atoms & Elements
Calculating Molar Mass
Multiple Choice
What is the molar mass of N_2?
A
2.02 g/mol
B
14.01 g/mol
C
28.02 g/mol
D
32.00 g/mol
Verified step by step guidance1
Identify the chemical formula of the molecule, which is \(\mathrm{N_2}\), meaning it consists of two nitrogen atoms bonded together.
Find the atomic mass of a single nitrogen atom from the periodic table, which is approximately 14.01 g/mol.
Since there are two nitrogen atoms in \(\mathrm{N_2}\), multiply the atomic mass of nitrogen by 2: \(2 \times 14.01\) g/mol.
Write the expression for the molar mass of \(\mathrm{N_2}\) as \(\mathrm{Molar\ mass} = 2 \times 14.01\ \mathrm{g/mol}\).
This calculation gives the molar mass of \(\mathrm{N_2}\), which you can then evaluate to find the final value.
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