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Sunshine447

  • 2 years ago

How many moles of tungsten atoms are in 4.8*10^25 atoms of tungsten? a. 800 moles b. 80 moles c. 0.13 moles d. 0.013 moles

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  1. Sunshine447
    • 2 years ago
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    @AccessDenied

  2. Sunshine447
    • 2 years ago
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    @ghazi

  3. Sunshine447
    • 2 years ago
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    @Preetha

  4. ghazi
    • 2 years ago
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    number of moles \[n=\frac{ w }{ m }\] but here you have been given atoms and one mole =6.022 *10^23 atoms there fore number of moles are \[n=\frac{ 4.8*10^{25} }{ 6.022*10^{23} }=79.707 \]

  5. ghazi
    • 2 years ago
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    @Sunshine447 hope that helps you

  6. Sunshine447
    • 2 years ago
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    @ghazi but how did you get 79.707?

  7. ghazi
    • 2 years ago
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    i think i made a mistake, its 7.9707 moles

  8. ghazi
    • 2 years ago
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    just a division of the numbers i have written above

  9. Sunshine447
    • 2 years ago
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    not an answer....

  10. Sunshine447
    • 2 years ago
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    my teacher said to round up, so i think 79.707 was correct....

  11. ghazi
    • 2 years ago
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    one mole has 6.02*10^23 atoms 1 atom is there in 1/6.02 *10^23 moles therefore 4.8 *10^25 will be in 4.8*10^25/6.02*10^25 and answer is B

  12. ghazi
    • 2 years ago
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    round it to nearest 10

  13. ghazi
    • 2 years ago
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    is that clear now? @Sunshine447 :D

  14. Sunshine447
    • 2 years ago
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    yeah, thanks :D

  15. ghazi
    • 2 years ago
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    :)

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