Question

Which of the following contains maximum no.of water molecules?
a) 18 molecules of water
b) 1.8 g of water
c) 18g of water
d) 18 moles of water
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Answer 1

Answer:

Mole Concept -

One mole is the amount of a substance that contains as many particles or entities as there are atoms in exactly 12 g (or 0.012 kg) of the 12C isotope.

- wherein

one mole = 6.0221367 X 1023

Let us check the number of molecules in each option.

18 molecules of water have 18 molecules

1.8 gram of water has

18 gram of water has

18 moles of water has 18 NA molecules

Option 1)

18 molecules of water

This option is incorrect

Option 2)

1.8 gram of water

This option is incorrect

Option 3)

18 gram of water

This option is incorrect

Option 4)

18 moles of water

This option is correct

Explanation:

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Answer 2

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