Agas has an initial volume of 15.4 l at a pressure of 1.5 atm and a temperature of 310 k. the pressure of the gas decreases to 0.9 atm as the temperature decreases to 268 k. what is the final volume of the gas? round your answer to the nearest tenth.
22.2 l

Answer : The final volume of gas is, 22.2 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 = 1.5 atm

= final pressure of gas = 0.9 atm

= initial volume of gas = 15.4 L

= final volume of gas = ?

= initial temperature of gas = 310 K

= final temperature of gas = 268 K

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

Therefore, the final volume of gas is, 22.2 L

n+h→nh3

we must remember that nitrogen and hydrogen are both diatomic molecules in their standard gas form. this adjusts the equation to

n2+h2→nh3

now we need to adjust coefficients in order to balance the atoms on each side of the equation. currently we have 2 atoms of nitrogen and 2 atoms of hydrogen on the reactant side and 1 atom of nitrogen and 3 atoms of hydrogen on the product side.

we can balance the hydrogens by placing a coefficient of 2 in front of ammonia and a coefficient of 3 in front of the hydrogen.

n2+3h2→2nh3

this gives us 6 hydrogen on each side and coincidentally the nitrogens now equal 2 on each side.