How many grams of dihydrogen are required to react with dinitrogen to produce $34 \ g$ of ammonia (in $g$)?

When $22.4 \, L$ of $C_4H_8$ at $STP$ is burnt completely,$89.6 \, L$ of $CO_2$ gas at $STP$ and $72 \, g$ of water are produced. The volume of the oxygen gas at $STP$ consumed in the reaction is closest to $.... \, L$

One mole of fluorine is reacted with two moles of hot concentrated $KOH$. The products formed are $KF, H_2O$ and $O_2$. The molar ratio of $KF, H_2O$ and $O_2$, respectively is

What is the mass in $g$ of $70\%$ $H_2SO_4$ required for the neutralization of $1$ mole of $NaOH$?

How many liters of $CO_2$ gas are released at $STP$ upon the complete decomposition of $9.85 \ g$ of $BaCO_3$ (Atomic mass of $Ba = 137$)?

What will be the volume of $CO_2$ at $S.T.P.$ obtained by heating $9.85 \ g$ of $BaCO_3$? (Atomic mass of $Ba = 137$)