Calculate the number of atoms in 0.5 moles of Helium?

0.5 N_{A}

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N_{A}

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2 N_{A}

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2.5 N_{A}

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Solution

The correct option is A $0.5 N_{A}$
Number of atoms $= m o l e s \times A v o g a d r o n u m b e r = 0.5 N_{A}$

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