Molar mass concept: The mass of one Avogadro number of helium atoms (i.e., one mole of He) equals what value? Recall molar mass equals atomic weight in grams per mole. Choose the correct option.
IIT JEE
Chemistry
Difficulty: Easy
Choose an option
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A1 g
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B2 g
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C4 g
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D8 g
Answer
Correct Answer: 4 g
Explanation
ConceptHe atomic weight ≈ 4.00 g/mol. Therefore one mole (Avogadro number of atoms) has mass 4 g.