The mass (g) of a single H2 molecule (use 1H) is closest to:(Use the isotopic mass of 1H = 1.008 amu)
Question
The mass (g) of a single H2 molecule (use 1H) is closest to:
(Use the isotopic mass of 1H = 1.008 amu)
Solution
Sure, here is the step by step solution:
- An H2 molecule consists of two 1H atoms.
- The mass of one 1H atom is given as 1.008 amu.
- Therefore, the mass of an H2 molecule is 2 * 1.008 amu = 2.016 amu.
- However, the question asks for the mass in grams.
- We know that 1 amu is approximately equal to 1.660539040 * 10^-24 grams.
- Therefore, the mass of an H2 molecule in grams is 2.016 amu * 1.660539040 * 10^-24 g/amu = 3.346 * 10^-24 grams.
So, the mass of a single H2 molecule is closest to 3.346 * 10^-24 grams.
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