In which of the following, the number of hydrogen atoms is more 3 moles of H. O
10 moles of HCI

2.1 mole of NH3. Let us calculate number of hydrogen atoms in (i) 2 moles of HCl and (ii) 1 mole of NH3. So by comparison, we find that 1 mole of NH3 contains more number of hydrogen atoms than 2 moles of HCl

Explanation:

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answers: to make sure that all of the broken pieces of tablet were added to the water, to allow for fair comparison of all three trials, with different particle sizes to avoid experimental error