## 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 !!

1. anonymous

$5.0 \times 10^{9}particles \times \frac{ 7.53 \times 10^{-10}kg }{ 1 particle }$

2. anonymous

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

@Larryboxaplenty so I'll be dividing 7.53×10^-10 by 5,000,000,000?

4. anonymous

|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

Wouldn't it be easier to convert 5,000,000,000 to 5^10

6. anonymous

@larryboxaplenty

7. anonymous

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

9. anonymous

@larryboxaplenty

10. anonymous

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

* 3.765 kg

12. anonymous

Alrighty THANKKKKKK you so much @larryboxaplenty