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Stoichiometry Avogadro Constant and Molar Mass

1

Choose the best answer

One Avogadro number, NA, of helium atoms has a mass of approximately:

Verified Answer & Explanation⌄

Correct Answer: B) 4 g

Concept Explanation

NA helium atoms represent 1 mol He, and the molar mass of helium is about 4 g mol⁻¹.

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