out of 6.02×10 to the power of 22 N2 molecules 700 mg are removed how many grams of H2 is required to convert N2 into NH3
Answers
Answered by
0
Answer:
Given mass = 200 mg = 0.2g
Number of moles =
44
0.2
=
220
1
Number of moles=
Avogadro’s number
number of molecules
⇒Number of molecules=Avogadro’s number×number of moles
⇒No. of molecules=6.022×10
23
×
220
1
=2.73×10
21
Molecules in
220
1
moles
As 10
21
molecules are removed,
∴ No. of molecules left = 2.73×10
21
−10
21
=1.73×10
21
∴ No. of moles=
Avogadro’s number
No. of molecules
=
6.23×10
23
1.73×10
21
=2.88×10
−3
Hence, option A is correct.
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