If average molecular mass of air is `29`, then assuming `N_2 and O_2` gases are there, which options are correct regarding composition of air ?

If average molecular mass of air is 29, then assuming N_(2) and O_(2) gases are there, which option are correct regarding composition of are? (i)75% "by mass of "N_(2)" (ii)75% "by moles of N_2 (iii)72.41% "by mass of N_(2)

If average molecular mass of air is 29, then assuming N_(2) and O_(2) gases are there, which option are correct regarding composition of are? (i) 75% "by mass of" N_(2)" "(ii)75% "by moles "N_(2)" "(iii)72.41% "by mass of" N_(2)

If average molecular mass of air is 29, then assuming N_(2) and O_(2) gases are there, which option are correct regarding composition of are? (i) 75% "by mass of" N_(2)" "(ii) 75% "by moles "N_(2)" "(iii)72.41% "by mass of" N_(2)

If average molecular mass of air is 29, then assuming N_(2) and O_(2) gases are there, which option are correct regarding composition of are? (i) 75% "by mass of" N_(2)" "(ii) 75% "by moles "N_(2)" "(iii)72.41% "by mass of" N_(2)

One mole mixture of CH_4 and air (containing 80% N_2 20 % O_2 by volume ) of a composition such that when underwent combustion gave maximum heat (assume combustion of only CH_4 ).Then which of the statements are correct , regarding composition of initial mixture ? (X presents mole fraction )

The molecular mass of O_2 is "___________"

How much CO_2 , is present in air composition ?

What is the approximate molecular mass of dry air containing 78% N_(2) and 22% O_(2) ?

Which of the following is not correct regarding electrolytic preparation of H_2 O_2 ?