Which of the following substances has the lowest boiling point?

Jayeobaopeoluwa

10 months ago

so therefore hydrogen is the right answer

Jayeobaopeoluwa

10 months ago

Upward delivery of gas=Downward displacement of air=gas is lighter than air.
air.

Downward delivery of gas=Upward displacement of air=gas is denser
than air.

001shedy

1 year ago

Chlorine (Cl2) and Carbon dioxide (CO2) gases are denser than air, so they can be collected by displacing air downward.
so option A is correct