What is the density of hydrogen gas?

Answer 1

The density of an element depends on its temperature, mass, and volume. Generally, hydrogen gas that might fill a balloon in your living room would be around 0.0899 kg/m3. For a more accurate and detailed answer with more information provided in the question, you would have to use the Ideal Gas Law which requires knowledge of temperature, mass, and volume.

Answer 2

Rearranging the ideal gas law equation we can find density of a gas by the following:

Density = (P * MW) / (R * T)

assuming pressure of 1 ATM and temperature of 25oC (298K) and MW of hydrogen = 2.0 g/mol. Since gaseous hydrogen exists as H2

Use ideal gas constant R = 0.08206 L*ATM / mol*K

Density = (1 ATM * 2 g/mol) / {(0.08206 L*ATM / mol *K) * (298K)}

Density is approx. = 0.082 g / L

Answer 3

The following values of density were calculated using three different thermodynamic property methods:

Ideal Gas: 0.808195 kg/m^3 = 0.05045396 lb/ft^3
Peng-Robinson: 0.8037558 kg/m^3 = 0.05017683 lb/ft^3
RK-Soave: 0.8034249 kg/m^3 = 0.05015617 lb/ft^3


The ideal gas law favors conditions that are high temperature and low pressure. Your pressure is sufficiently high that use of the values from the Peng-Robinson or RK-Soave methods would be advisable (especially when they are already calculated for you).

Answer 4

At standard temperature & pressure, the density of hydrogen is: 0.08988 g/L

Answer 5

One mol of any gas at STP occupies 22.4 litres. One mol of He weighs 4g. Divide one by the other .....

Answer 6

These notions doesn't exist for hydrogen.
The IUPAC official data for chemistry are 273,15 K and 100 000 Pa. But frequently other values are used as standard.

Answer 7

0.09