QQuestionChemistry
QuestionChemistry
What is the molar mass of methane (CH4)?
A. 16.05 grams
B. 13.02 grams
C. 49.05 grams
D. 10 grams
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Answer
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Step 1:: Write out the molecular formula for methane.
Methane is composed of one carbon atom and four hydrogen atoms, so its molecular formula is CH^4.
Step 2:: Find the molar mass of each element in the molecule.
- The molar mass of carbon (C) is approximately 12.01 grams per mole (g/mol). - The molar mass of hydrogen (H) is approximately 1.01 g/mol.
Step 3:: Calculate the molar mass of the entire molecule by adding up the molar masses of its constituent elements.
12.01 g/mol + 4 * 1.01 g/mol = 12.01 g/mol + 4.04 g/mol = 16.05 g/mol
- The molar mass of CH^4 is given by the sum of the molar masses of 1 atom of C and 4 atoms of H:
Final Answer
Therefore, the correct answer is A. 16.05 grams.
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