PDF chapter test TRY NOW
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 \(=\)
Register for free to see more content