Question

How many number of moles are present in 15L of water at STP?

Answer 1

22.4L contains 1 mole

15L contain x moles

22.4x=15

x=15/22.4

x=0.66 moles

Answer 2

Hope u like my process
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1 mole of Water at STP = 22.4L

Thus,

1 litre of water at STP = (1/22.4) moles

So,

15 litre of water at STP
=15 ×(1/22.4)moles
=0.67 moles
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