Question

A sample of hydrogen gas (Ha) has a volume of 8.562 ar a temperature of 0°C and a pressure of 1.5 atm. Calculate the moles of He molecules prese en in this gas sample​

Answer 1

.573 moles

Explanation: assuming 8.562 LITER volume:

Ideal gas law

PV = n RT the gas constant to be used has to match the units of the other parameters R = .082057 L-atm/mol-K

T must be in K units

1.5 (8.562) = n * (.082057)(273.15)

n=.573 moles