Calculate the relative molecular mass of sodium hydrogen tetraoxosulphate(VI). [Na = 23, H = 1, S = 32, O = 16]

The measure of the average kinetic energy of the molecules of a gas is its

A salt which loses its water of crystallization on exposure to the atmosphere is

The application of heat to a gas in a closed container of fixed volume causes increase in pressure because the

The oxidation number of oxygen in hydrogen peroxide is

A base that is soluble in water is referred to as

The components of universal indicator can be separated by

Acid-base titration can be used to determine the following except the

2Pb(NO₃)₂ → 2PbO + zNO₂ + O₂ What is the value of z in the equation above?

What is the molecular formula of the compound formed between phosphorous and hydrogen?

A 4.00 dm³ of a gas has a pressure of 1.15 kPa. What would be the volume after the pressure has been increased to 2.30 kPa at constant temperature?

The method of separation and purification of substances based on the unequal distribution of substances between two carrier phases is known as

A given mass of gas has a volume of 480cm³ at s.t.p. Calculate the volume in cm³ at 39⁰C and 800mmHg pressure.

Differences between solids, liquids and gases are explained in terms of the kinetic theory. Which of the following statements are correct? I. Particles are closer together in liquids than in gases. II. All liquids are viscous. III. Molecules leave the liquid surface and gaseous when they have sufficient velocity. IV. There are forces of attraction between liquid particles but not between gas particles.