6. The average molar mass of a mixture of CO(g) and CO2(g) is 37.The mole percentage of CO(g) in the mixture is approximately

Q. The percentage by mole of ${NO}_2\left(g\right)$ in a mixture of ${NO}_2\left(g\right)$ and $NO\left(g\right)$ having average molecular mass 34 is :

Q. $10g$ of a mixture of $BaO$ and $CaO$ requires $100{cm}^3$ of $2.5M$ $HCl$ to react completely. The percentage of calcium oxide in the mixture is approximately:
(Given: molar mass of $BaO=153$)

Q. At $675K$, $H_2\left(g\right)$ and $C{O}_2\left(g\right)$ react to form $CO\left(g\right)$ and $H_{2}O\left(g\right),K_p$ for the reaction is $0.16$. If a mixture of $0.25$ mole of $H_2$(g) and $0.25$ mole of $C{O}_2$ is heated at $675K$, mole percentage of $CO\left(g\right)$ in equilibrium mixture is:

Q. The average atomic mass of a mixture containing 79 mole % of ${}^{24}Mg$ and remaining 21 mole % of ${}^{25}Mg$ and ${}^{26}Mg$, is 24.31. The % mole of ${}^{26}Mg$ in the mixture is :