How many moles are there in 4.9×10^23 molecules of CO2? F. 0.81 moles of CO2 G 8.14X10^45 H. 2.95X10^47 J. 2052.44

Question

How many moles are there in 4.9×10^23 molecules of CO2?
F. 0.81 moles of CO2
G 8.14X10^45
H. 2.95X10^47
J. 2052.44

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Thành Công 4 years 2021-09-03T19:10:12+00:00 1 Answers 15 views 0

Answers ( )

  1. thienhuong
    0
    2021-09-03T19:11:37+00:00
    Reply

    Answer:

    0.81 moles

    Explanation:

    To find the number of moles in a substance given it’s number of entities we use the formula

    n = \frac{N}{L} \\

    where n is the number of moles

    N is the number of entities

    L is the Avogadro’s constant which is

    6.02 × 10²³ entities

    From the question we have

    n = \frac{4.9 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{4.9}{6.02} \\ = 0.813953...

    We have the final answer as

    0.81 moles

    Hope this helps you

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