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Which amount of dioxygen (in grams) cont...

Which amount of dioxygen (in grams) contains `1.8 xx 10^(22)` molecules ?

A

9.6

B

0.096

C

96

D

0.96

Text Solution

Verified by Experts

The correct Answer is:
D
Molecular weight of `O_(2)` (dioxygen) is 32g
32g = 1 mole ` = 6.023 xx 10^(23)` molecules of `O_(2)` contains 32g of `O_(2)`
` therefore 1.8 xx 10^(23)` molecules of `O_(2)` contains amount of
`O_(2)` in gram ` = (32 xx 1.8 xx 10^(22))/(6.023 xx 10^(23)) = 0.956 ~= 0.96`
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