How do I determine the pressure of the 'wet' hydrogen gas and the pressure of hydrogen gas on its own? Do i use Dalton's law?

Question

anonymous · Answer

Room temperature (°C)	22.0
Barometric pressure (kPa)	100.5
Water vapor pressure at 22 °C (kPa)	2.60
Mass of Mg ribbon (g)	0.0500
Volume of hydrogen gas (mL)	48.3
	
Observations of reaction	•	when the Mg came into contact with the HCl bubbles of gas (H2) were produced
•	the H2 produced displaced the water in the graduated cylinder

preetha · Answer

You have to use partial pressures!