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1. Calculate the number of molecules in \(11.2\) \(L\) of \(CO_2\) at STP.
Data:
Given volume of \(CO_2=11.2\) \(L\)
Molar volume of \(CO_2=\)
Avogadro's number \(=6.023\times10^{x}\)
x \(=\)
Solution:
Number of moles of \(CO_2\) \(=\)
Number of molecules of \(CO_2\) \(=\)
Therefore, the number of molecules in \(11.2\) \(L\) of \(CO_2\) at STP \(=\) \(y\times10^{z}\)
Where,
2. Calculate the number of molecules in \(54\) \(g\) of \(H_2O\).
Data:
Given mass of \(H_2O=54\) \(g\)
Gram molecular mass of \(H_2O=\)
Avogadro's number \(=6.023\times10^{23}\)
Solution:
Number of molecules \(=\)
x \(=\)
y \(=\)
Therefore, the number of molecules in \(54\) \(g\) of \(H_2O=18.069\times10^{z}\) \(molecules\)
z \(=\)
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