Chemistry Past Questions and Answers

How much of magnesium is required to react with 260cm<sup style='font-size: smaller;'>3</sup> of 0.5 M HCl? [Mg = 24]

The relationship between the velocity (U) of gas molecules and their relative molecular mass (M) is shown by the equation

An element with atomic number twelve is likely to be

Which of the following groups of physical properties increases from left to right of the periodic table?<br/>i. Ionization energy ii. Atomic radius iii. Electronegativity iv. Electron affinity

The reaction between sulphur (IV) oxide and oxygen is represented by the equilibrium reaction 2SO<sub style='font-size: smaller;'>2(g)</sub> + O<sub style='font-size: smaller;'>2(g)</sub> ↔ 2SO<sub style='font-size: smaller;'>3(g)</sub>, ∆H = -196 kJ. What factor would influence increased production of SO<sub style='font-size: smaller;'>3(g)</sub>?