What volume of oxygen at s.t.p would react with carbon to form 4.40g of CO₂ according to the following equation? C_(s) + O_2(g) → CO_2(g) [O = 16; C =12; 1 mole of a gas occupies 22.4dm³ at s.t.p]

A mixture of NaCI_(s) and CaCO_3(s) is best separated by

What is the basicity of the acid in the followed reaction? NaCO + 2CHCOOH → 2CH COONa + H₂O + CO₂

(a) List two properties of alpha particles.

(b) X is an element which exists as an isotopic mixture containing 90% of \(^{39}_{19} X\) and 10% of \(^{41}_{19}X\).

(i) How many neutrons are present in the isotope \(^{41}_{19}X\)?

(ii) Calculate the mean relative atomic mass of X.

(a)(i) State the two main processes involved in the manufacture of oxygen from air

(ii) Name the type of chemical bonding which exists between oxygen atoms in a molecule of oxygen

(b) What term is used to describe the relationship between oxygen and ozone (O\(_3\))?