Calculate the [NH₃] in a solution of 0.460 M ammonium cyanide (NH₄CN). Hint: Use the Ka of HCN (4.9 × 10⁻¹⁰) and the Kb of NH₃ (1.8 × 10⁻⁵) to calculate Kc for the reaction NH₄⁺(aq) + CN⁻(aq) ⇌ NH₃(aq) + HCN(aq).

Which part of earth’s surface receives the most direct rays from the sun? a) equator b) ocean c) poles d) mountains

An excess of lithium oxide undergoes a synthesis reaction with water to produce lithium hydroxide li2o+h2o→2lioh if 1.05 g of water reacted, what is the theoretical yield of lithium hydroxide? a) 5.83 x 10–2 g lioh b) 1.17 x 10–1 g lioh c) 2.79 x 100 g lioh d) 1.40 x 100 g lioh

What are the major types of a chemical compound