hi pls help me to solve this using dalton's law of partial pressure fomulaa

Question

1. A 1.5 L container is pressurized with 0.25 atm of

oxygen gas and 0.60 atm of nitrogen gas. What

will be the total pressure inside the container?

2. A container holds oxygen gas, carbon dioxide,

and helium. Calculate the total pressure inside

the container if the partial pressure of each gas

are 2.00 atm, 3.00 atm, and 3048 mmHg

respectively?

Answer 1

Total pressure = sum of partial pressures

Mole fraction (X) = moles of gas / total moles of all gases

Mole fraction x total pressure = partial pressure

1). Total pressure = sum of partial pressures

Total pressure = 0.25 atm + 0.60 atm = 0.85 atm

2). Convert pressure of helium to atmospheres

3048 mm Hg x 1 atm / 760 mm Hg = 4.0 atm

Total pressure = sum of partial pressures

Total pressure = 2.00 atm + 3.00 atm + 4.0 atm = 9.00 atm