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How many atoms of hydrogen are in 420g sample of water

How many atoms of hydrogen are in 420g sample of water
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How many atoms of hydrogen are in 420g sample of water

User AloneTogether
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In one mile of water there will be 6.02.1023 water molecules. So, there will be a total of 6.02.1023.2= 1.2.1024 hydrogen atoms
User Adem Catamak
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