A hydrocarbon ' X ' is found to have molar mass of 80. A 10.0 mg of compound ' X ' on hydrogenation consumed 8.40 mL of H_2 gas (measured at STP).…

A hydrocarbon ' X ' is found to have molar mass of $\displaystyle 80$ . A $\displaystyle 10.0$ mg of compound ' X ' on hydrogenation consumed $\displaystyle 8.40$ mL of $\displaystyle \mathrm{H}_2$ gas (measured at STP). Ozonolysis of compound ' X ' yields only formaldehyde and dialdehyde. The total number of fragments/ molecules produced from the ozonolysis of compound ' X ' is \_\_\_\_.