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1. 2.5 moles of CO_2 at STP
Data:
Given number of moles of CO_2=2.5
Molar volume of CO_2 at STP =
Solution:
Volume of CO_2 at STP =
Therefore, the volume occupied by 2.5 mole of CO_2 at STP =
2. 3.011\times10^{23} of ammonia gas molecules.
Data:
Given the number of ammonia gas molecules = 3.011\times10^{23}
Avogadro’s number =6.023\times10^{23}
Solution:
Number of moles =
=
Volume occupied by NH_3 =
Therefore, the volume occupied by 3.011\times10^{23} of ammonia gas molecules =
3. 14 g of nitrogen gas.
Data:
Given mass of nitrogen gas =14 g
Molecular mass of nitrogen gas =28
Solution:
Number of moles =
=
Volume occupied by N_2 gas at STP =
Therefore, the volume occupied by 14 g of nitrogen gas =
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