861 past contests
Topic 6 · Ionic product of a hydroxide in a mixture formed by mixing two solutions
Topic 12 · Volume of acid required to neutralize a measured portion of a base solution of known mass
Topic 7 · Sum of the oxidation states of an element across several of its compounds
Topic 19 · Empirical formula of a hydrocarbon from the mass of carbon dioxide produced on combustion
Topic 11 · Partial pressure of a gas in a mixture using mole fraction
Topic 11 · Molar mass of a gas from its rate of effusion relative to a known gas (graham's law)
Topic 2 · Standard enthalpy of combustion from standard enthalpies of formation (hess's law)
Topic 20 · Mass of a hydrated acid required to prepare a solution of given volume and molarity
Topic 1 · Total number of atoms in a given number of moles of a hydrocarbon
Topic 38 · Mass of metal deposited during electrolysis from current and time (faraday's laws)
Topic 26 · Systematic name of the alkane isomer with the shortest possible parent chain
Topic 1 · Mass of oxide obtained from complete thermal decomposition of a carbonate
Topic 7 · Percentage by mass of oxygen in an oxide from a non-integer oxidation state
Topic 20 · Volume of water added to dilute an acid to a new concentration
Topic 6 · Mass of a sparingly soluble oxalate (ksp) that dissolves in a given volume of water
Topic 1 · Mass of a carbonate heated to form a given mass of its oxide
Topic 11 · Mean molar mass of a gas mixture from its percentage composition
Topic 15 · Rate constant with units from a rate law r = k[a]^2[b]^3
Topic 6 · Equilibrium constant with units for a gaseous reduction reaction (no + h2 to n2 + h2o)
Topic 23 · Systematic name of a saturated tertiary alcohol isomer resistant to dichromate oxidation