Please help 2 Chemistry problem In description below!

Question

If 9.50 L of a gas is at standard temperature and pressure is compressed to 956

mL, what is the new pressure of the gas in atm (hint, temperature stays the

same)?

Submarines need to be extremely strong to withstand the extremely high

pressure of water pushing down on them. An experimental research submarine

with a volume of 7,000 liters has an internal pressure of 1.5 atm. If the pressure of the ocean breaks the submarine forming a bubble with a pressure of 145 atm

pushing on it, how big will that bubble be in liters?

Answer 1

If 9.50 L of a gas is at standard temperature and pressure is compressed to 956

mL, what is the new pressure of the gas in atm (hint, temperature stays the

same)?

P1V1 = P2V2 (Boyles Law)

P1 = initial pressure = 1 atm (STP)

V1 = 9.50 L

P2 = final pressure = ?

V2 = final volume 956 ml = 0.956 L

(1 atm)(9.50 L) = (P2)(0.956 L)

P2 = 9.94 atm

An experimental research submarine

with a volume of 7,000 liters has an internal pressure of 1.5 atm. If the pressure of the ocean breaks the submarine forming a bubble with a pressure of 145 atm

pushing on it, how big will that bubble be in liters?

P1 = initial pressure = 1.5 atm

V1 = initial volume = 7000 L

P2 = final pressure = 145 atm

V2 = final volume = ?

(1.5 atm)(7000 L) = (145 atm)(V2)

V2 = 72.4 L