Multiple Choice
What is the molar mass of beryllium oxide (BeO)?
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Calculating Molar Mass
Multiple Choice
Which of the following is the molar mass of molecular oxygen (O_2)?
A
28.02 g/mol
B
16.00 g/mol
C
18.02 g/mol
D
32.00 g/mol
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Verified step by step guidance1
Identify the molecular formula of molecular oxygen, which is \(\mathrm{O_2}\), meaning it consists of two oxygen atoms bonded together.
Find the atomic mass of a single oxygen atom from the periodic table, which is approximately 16.00 g/mol.
Calculate the molar mass of \(\mathrm{O_2}\) by multiplying the atomic mass of oxygen by 2, since there are two oxygen atoms in the molecule.
Express the calculation as: \(\text{Molar mass of } \mathrm{O_2} = 2 \times 16.00\ \mathrm{g/mol}\).
Sum the values to get the total molar mass of molecular oxygen, which will help you identify the correct answer from the given options.
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