A mixture of 95% oxygen and 5% `CO_(2)` is called

A gaseous mixture of H_(2) and CO_(2) gas contains 66 mass % of CO_(2) . The vapour density of the mixture is :

In an adiabatic expansion of air (assume it a mixture of N_2 and O_2 ), the volume increases by 5% . The percentage change in pressure is:

On being heated in air, a mixture of Feo and Fe_2O_4 picks up oxygen to convert completely to Fe_2O_3 . If the observed weight gain is 5% of the initial weight, what must have been the composition of the initial mixture?

What amounts (in litres) of 90% and 97% pure acid solutions are mixed to obtain 21 L of 95% pure acid solution?

A gaseous mixture contains 40% O_(2), 40% N_(2), 10% CO_(2), 10% CH_(4) by volume. Calculate the vapour density of the gaseous mixture.

More than 95% of transgenic animals are