Q.
The mass of a molecule of water is
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a
3 × 10−26 kg
b
3 × 10−25 kg
c
1.5 × 10−26 kg
d
2.5 × 10−26 kg
answer is A.
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Detailed Solution
6 × 1023 molecules has mass=18 g1 molecules has mass=186 × 1023 =3 × 10−23 g =3 × 10−26 kg
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