I missed the lesson and can't really figure out the answers to some of the gas law questions
In a deep-sea station 2.0 102 m below the surface, the pressure in the module is 20.0 atm. How many liters of air at sea level are needed to fill the module with 2.05 107 L of air?
and
A polyethylene plastic weather balloon contains 1.9 mol of helium, which is at -61°C and 1.1 103 Pa. What will be the volume of the balloon?
In a deep-sea station 2.0 102 m below the surface, the pressure in the module is 20.0 atm. How many liters of air at sea level are needed to fill the module with 2.05 107 L of air?
and
A polyethylene plastic weather balloon contains 1.9 mol of helium, which is at -61°C and 1.1 103 Pa. What will be the volume of the balloon?