Addition polymerization occurs when __________ join together __________ any molecules or atoms.

The infrared spectrum was obtained from a compound and showed absorption bands at 1700 cm^-1 and 1200 cm^-1. Which of the compounds could account for this spectrum?

Identify the unknown substances in the following reaction;

Where could one find elevated levels of radon gas, perhaps posing health risks?

Sc³⁺ ion is colourless. Why?

Sodium potassium tartarate (NaKC₄H₄O₆) is used to adjust the pH during fruit processing. In this process, sodium potassium tartarate is being used as a/an:

For a salt derived from a weak acid and a weak base, both the cation and the anion hydrolysis, affecting the pH of the solution. Which of the following salt is an acidic salt?

When ethanal is reduced with LiAlH₄ in dry ether at room temperature, __________ is produced.

What is the pH of a solution that contains 0.25 mol of HBr in 750 cm³ of solution?

At 230 ºC, K_c = 0.093 for the equilibrium 2NO (g) + O₂ (g) ⇌ 2NO₂ (g), calculate the concentration of O₂ in an equilibrium mixture containing 0.542 mol dm^-3 of NO and 0.059 mol dm^-3 of NO₂.