The mass of single gold atom is 3.27x10^-22 g. What is this mass in pounds ?

2018-01-26 9:47 am
My answer is 7.22 pounds x 10^-26 right or wrong ?

回答 (3)

2018-01-26 2:16 pm
✔ 最佳答案
did you try dimensional analysis?
3.27x10^-22 g * (1 lb / 453.56 g) = ___ lb
2018-01-26 9:52 am
You answer is not correct.

1 g = 0.0022046 pound

Mass of a single gold atom
= 3.27 × 10⁻²² g
= (3.27 × 10⁻²² g) × (0.0022046 pound/g)
= 7.21 × 10⁻²⁵ pound
2018-01-26 10:04 am
I get 7.21e-25 lb

you are off by a factor of 10


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