Calculating Mr of unknown substance(gas)

Question 1

Step One

Answer 1

-Weigh small syringe then add the volatile liquid to it and reweigh.

Question 2

Step two

Answer 2

-Transfer volatile liquid into a gas syringe through its self sealing rubber cap and reweigh the small syringe to work out the mass of volatile liquid in the gas syringe.

Question 3

Step Three

Answer 3

-Place Gas Syringe in a water bath at 100*C and measure the volume of gas formed.