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Q.
$1.5 \,g $ of hydrocarbon on combustion in excess of oxygen produces $4.4\, g$ of $CO_2$ and $2.7 \,g$ of $H_2O$, the data illustrates
Some Basic Concepts of Chemistry
Solution:
Mass of hydrocarbon $CH = 1\cdot5 \,g$
Changes to $CO_{7}$ and $H$ changes to $H_{2}O$
$C$ in $4\cdot4 \,g$ of $CO_{2} = 1\cdot2\, g$
$H$ in $2\cdot 7\,g$ of $H_{2}O$ $=\frac{2\times2.7}{18}=0\cdot3\,g$
Mass of $C$ + Mass of $H\cdot = 1\cdot2+0\cdot3=1\cdot5\,g$
which is equal to the mass of hydrocarbon taken