Question

What is the density of oxygen gas at 5 atm and 27 c 6.5 g/l 5.6 g/l 7.6 g/l 8.2 g/l

Answer 1

First, let's write down what we know:

Gas is oxygen gas or O2.

Pressure is 5 atm

Temperature is 27 °C

Let's start with the Ideal Gas Law formula.

PV = nRT

where

P = pressure

V = volume

n = number of moles of gas

R = gas constant (0.0821 L·atm/mol·K)

T = absolute temperature

If we solve the equation for volume, we get:

V = (nRT)/P

We know everything we need to find the volume now except the number of moles of gas. To find this, remember the relationship between number of moles and mass.

n = m/MM

where

n = number of moles of gas

m = mass of gas

MM = molecular mass of the gas