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Mazyrski [523]
3 years ago
12

The mass of a an atom of helium is 6.65 x 10^−24. Use scientific notation to express the mass of 250 helium atoms.

Mathematics
2 answers:
olga55 [171]3 years ago
6 0

i took the test and it's actually A) 1.6625 x 10−21 :)

melisa1 [442]3 years ago
5 0
<span>1.6625 x 10−21</span>

<span>mass of one helium atom x 250 </span>
Express 250 as 2.50.
(6.65 x 10−24)(2.50 x 102)
16.625 x 10<span>−22</span>
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