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80 g of oxygen contains as many atoms as...

80 g of oxygen contains as many atoms as in

A

10 g of hydrogen

B

5 g of hydrogen

C

80 g of hydrogen

D

1 g of hydrogen.

Text Solution

Verified by Experts

The correct Answer is:
B
Moles of oxygen ` = 80/16 = 5 ` mol
No. of atoms of oxygen ` = 5 xx 6.022 xx 10^23 ` atoms
moles of hydrogen in 5g ` 5/1 = 5` mol
No. of atoms of hydrogen ` = 5 xx 6.022 xx 10^23 ` atoms .
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