Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of O_3 per mole of (X) and gives one mole each of ethanal and propanone is…

Molar mass of the hydrocarbon (X) which on ozonolysis consumes one mole of $\displaystyle \mathrm{O}_3$ per mole of (X) and gives one mole each of ethanal and propanone is $\displaystyle \_\_\_\_$ $\displaystyle \mathrm{g} \mathrm{mol}^{-1}$ (Molar mass of C : $\displaystyle 12 \mathrm{~g} \mathrm{~mol}^{-1}, \mathrm{H}: 1 \mathrm{~g} \mathrm{~mol}^{-1}$ )