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Answer:
Explanation:
This means that the atomic mass of methane is 12.011+4(1.00794)=16.04276 g/mol.
This means that in a 37.8-gram sample of methane, there would be [tex](37.8)\left(\frac{25.1}{100} \right)=\boxed{9.49}[/tex] grams of hydrogen.