How many grams of nan3 are required to produce 19.0 ft3 of nitrogen gas, about the size of an automotive air bag, if the gas has a density of 1.25 g/l?

The  balanced chemical reaction is given as:

Now, convert into litres.

So,

Density is equal to the ratio of mass to the volume.

where, M = mass and V= volume

Substitute the value of density and volume in formula to get the value of mass.

Now, number of moles of gas=

=

According to the reaction, 2 moles of sodium azide gives 3 moles of nitrogen gas.

Now, in 24.00 moles of nitrogen gas produced from= of nitrogen gas, moles of sodium azide.

number of moles of sodium azide  =

Mass of sodium azide in g  =  .

=

=

Thus, mass of sodium azide which is required to produce of nitrogen gas  =