The number of oxygen molecules present in 16.0g of the gas is ______?
[Avogadro's number = 6.02 x 10²³]

Consider the following reaction equation:
SO₄^2-_(aq) + 2H⁺_(aq) + ye^- \(\to\) SO₄^2-_(aq) + H₂O₍₁₎.

The value of y in the equation is

The general gas equation was deprived from______?

The vapour pressure of a liquid depends on:
I. Temperature II. rate of condensation III. Cohesive forces holding the particles together.

Which of the following gases will diffuse most rapidly?

[H = 1.00, C = 12.0, O = 16.0, S = 32.0, Cl = 35.5]