A sample of helium gas has a volume of at and a pressure of

CHEMISTRY · Subjective · A Level · Chemistry · Amount of substance · Amount of substance

Problem

A sample of helium gas has a volume of

3.5\,\text{L}

25\,^{\circ}\text{C}

and a pressure of

1.10\,\text{atm}

. Calculate the amount of helium present in moles, giving your answer correct to two significant figures.