Asample of propane, a component of lp gas, has a volume of 35.3 l at 315 k and 922 torr. what is its volume at stp (r = 0.08206 l • atm/k • mol, 1 atm = 760 torr)?

Answer : The volume of gas at STP is, 37.12 L

Explanation :

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 922 torr = 1.213 atm

conversion used : (1 atm = 760 torr)

= final pressure of gas at STP = 1 atm

= initial volume of gas = 35.3 L

= final volume of gas at STP  = ?

= initial temperature of gas = 315 K

= final temperature of gas at STP = 273 K

Now put all the given values in the above equation, we get:

Therefore, the volume of gas at STP is, 37.12 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: