What volume of product is produced when 20.0 Mg of liquid hydrogen reacts with
excess liquid oxygen in a rocket propellant reaction? The gas is formed at 101.325 kPa and 40.0 o C

The volume of product formed is 0.26 L

Explanation:

As is the the excess reagent, is the limiting reagent as it limits the formation of product.

According to stoichiometry :

2 moles of give = 2 moles of

Thus 0.01 moles of will give =  of

According to ideal gas equation:

P = pressure of gas = 101.325 kPa = 1 atm

V = Volume of gas = ?

n = number of moles = 0.01

R = gas constant =

T =temperature =

Thus the volume of product formed is 0.26 L

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: