A) 80 g of hydrogen
B) 1 g of hydrogen
C) 10 g of hydrogen
D) 5 g of hydrogen
Correct Answer: D
Solution :
Number of moles of oxygen \[=\frac{80}{16}\] Number of atoms of oxygen \[=\frac{80}{16}\times {{N}_{0}}\times 2\] \[=5\times {{N}_{0}}\times 2\] Number of moles of 5g of hydrogen \[=\frac{5}{1}\] Number of atoms in 5g of hydrogen \[=5\times {{N}_{0}}\times 2\] Hence, the number of atoms in 80g of oxygen is equal to the number of atoms in 5 g of hydrogen.
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