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anonymous

  • one year ago

The particle of dust has a mass of 7.53×10^-10 kilograms. Find the weight of 5 billion dust particles. Plzzz help !!

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  1. anonymous
    • one year ago
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    \[5.0 \times 10^{9}particles \times \frac{ 7.53 \times 10^{-10}kg }{ 1 particle } \]

  2. anonymous
    • one year ago
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    That will give you weight in kg. If you need it in something else, you need to convert kg to that something else

  3. anonymous
    • one year ago
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    @Larryboxaplenty so I'll be dividing 7.53×10^-10 by 5,000,000,000?

  4. anonymous
    • one year ago
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    |dw:1442782613471:dw| You multiply the mass of one particle by 5 billion. The one is there so show that the unit "particles" cancel

  5. anonymous
    • one year ago
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    Wouldn't it be easier to convert 5,000,000,000 to 5^10

  6. anonymous
    • one year ago
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    @larryboxaplenty

  7. anonymous
    • one year ago
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    1 mill = 10^6 10 mill = 10^7 100 mill = 10^8 1 bill = 10^9 10 bill = 10^10 5^10 = 9.765 million. 5.0 x 10^9 is scientific notation. my 5x10^9 should have been 5.0 x 10^9

  8. anonymous
    • one year ago
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    What about the 7.53×10^-10?

  9. anonymous
    • one year ago
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    @larryboxaplenty

  10. anonymous
    • one year ago
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    multiply (7.53*10^-10) by (5.0 x 10^9) = (7.53*5) * 10^(-10+9) = 37.65 * 10^-1 = 3.765

  11. anonymous
    • one year ago
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    * 3.765 kg

  12. anonymous
    • one year ago
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    Alrighty THANKKKKKK you so much @larryboxaplenty

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