Question

how many moles of hydrogen are left when 3*10^21 molecules of hydrogen are removed from a vessel containing 40 mg of hydrogen​

Answer 1

Question :- How many moles of hydrogen are left when 3*10^21 molecules of hydrogen are removed from a vessel containing 40 mg of hydrogen​ ?

Answer :- No. of moles of hydrogen in the vessel= 40/1=40mol

No.of moles of hydrogen reduced=3*10^21/6*10^23=0.5*10^-2

Moles of hydrogen left in the vessel= 40-(0.5*10^-2)=39.995mol

Answer 2

Answer:

0.035 moles

Explanation:

The explanation is given in the attachment.

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