Complete combustion of 3 g of ethane gives x × 10^22 molecules of water. The value of x is \ \ \ \. (Round off to the Nearest Integer). [Use: N_A…

Complete combustion of $\displaystyle 3$ g of ethane gives $\displaystyle x \times 10^{22}$ molecules of water. The value of $\displaystyle x$ is \_\_\_\_. (Round off to the Nearest Integer). [Use : $\displaystyle \mathrm{N}_{\mathrm{A}}=6.023 \times 10^{23} ;$ Atomic masses in u : $\displaystyle \mathrm{C}: 12.0 ; \mathrm{O}: 16.0 ; \mathrm{H}: 1.0$ ]