how many hydrogen atoms are there in 3 moles of hydrogen gas?
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Explanation:
As hydrogen gas is diatomic, 3 moles of hydrogen gas contains 3 x 6.022 x 10^23 H2 molecules, each containing 2 hydrogen atoms. Therefore, 3 moles of hydrogen gas contains 2 x 3 x 6.022 x 10^23 hydrogen atoms, or 3.6132 x 10^24.
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