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Moles and Molar Mass

AP Chemistry· difficulty 2/5

How many atoms are in 0.50 mol of helium?

  • A

    0.50×10230.50 \times 10^{23}

  • B

    1.20×10241.20 \times 10^{24}

  • C

    3.01×10233.01 \times 10^{23}

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  • D

    6.02×10236.02 \times 10^{23}

Explanation

0.50×6.02×1023=3.01×10230.50 \times 6.02 \times 10^{23} = 3.01 \times 10^{23} atoms.

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