Question

what is the pressure in a 26.0- l cylinder filled with 45.0 g of oxygen gas at a temperature of 314 k ? express your answer to three significant figures with the appropriate units.

Answer 1

The pressure in the cylinder is 1.85 atm.

Step-by-step explanation:

To find the pressure in a 26.0 L cylinder filled with 45.0 g of oxygen gas at a temperature of 314 K, we can use the ideal gas law equation: PV = nRT.

First, we need to convert the mass of oxygen gas into moles.

We can use the molar mass of oxygen (32 g/mol):

(45.0 g) / (32 g/mol) = 1.41 mol

Next, we can substitute the values into the equation:

(P)(26.0 L) = (1.41 mol)(0.0821 L·atm/mol·K)(314 K)

Solving for P:

P = (1.41 mol)(0.0821 L·atm/mol·K)(314 K) / (26.0 L)

P = 1.85 atm

Therefore, the pressure in the cylinder is 1.85 atm.