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Find the approximate number of atoms in ...

Find the approximate number of atoms in 20g of `SO _(3).`

A

`1 xx 10 ^(23)`

B

`1 . 5 xx 10 ^(23)`

C

`2 xx 10 ^(23)`

D

`6 xx 10 ^(23)`

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The correct Answer is:
D
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