$S{O_2}\,\, + \,\,2\,\,{H_2}S\,\, o \,\,3S\,\, + 2\,\,{H_2}O$ 2 mol of ${H_2}S$ and 11.2 L $S{O_2}$ at NTP react to form $imes$ mol at sulphur, then $imes$ is

Number of molecules in 1 ml of ${O_2}$ at NTP

0.5 moles of water contains how many molecules?

Suppose the elements X and Y combine to form two compounds $X{Y_2}$ and ${X_3}{Y_2}$. When 0.1 mole of $X{Y_2}$ weights 10 g and 0.05 mole of ${X_3}{Y_2}$ weights 9 g, the atomic weights of X and Y are

A mixture of $2.3$ g formic acid and $4.5$ g oxalic acid is treated with conc. $H_2SO_4$. The evolved gaseous mixture is passed through $KOH$ pellets. The weight (in g) of the remaining product at STP will be

Which has more molecules: 1 mole of glucose or 18 grams of water?

The volume of ammonia obtained by the complete combination of $10\,\,{\rm{mL}}$ of ${{\rm{N}}_2}$ and $30\,\,{\rm{mL}}$ of ${{\rm{H}}_2}$ is:

A mixture of $CaCO_3$ and $MgCO_3$ weighing 1.84 g on heating leaves a residue weighing 0.96 g. If the percentage by mass of $CaCO_3$ in the original mixture is x%, what is the value of x/2?

Which sample contains the largest number of helium atoms?

Which of these samples contains the fewest atoms?

Elements M and N form two compounds, $MN$ and $M_2N_3$. 0.5 moles of $MN$ weighs 25 g, and 0.1 moles of $M_2N_3$ weighs 13 g. Determine the atomic weights of M and N.