Live practice

Proceed from the given expression and keep every transformation explicit.

The last line satisfies the required domain and establishes the result.

Proceed from the given expression and keep every transformation explicit.

The last line satisfies the required domain and establishes the result.

The set of first coordinates is \(A\), and the set of second coordinates is \(B\). Therefore \(A=\{a,b\}\) and \(B=\{x,y\}\).

An aldehyde of molar mass 44 u is ethanal. Two identical ethanal molecules arise when a symmetrical alkene is cleaved through its central double bond.

Successive homologues differ by CH₂ while retaining the same functional group.

Combine the stated cation oxidation state with the anion charge and reduce subscripts to the smallest whole-number ratio.

Reversing a chemical equation replaces K by its reciprocal.

Heat on the product side means ΔH0. Therefore ΔG=ΔH−TΔS is negative at every positive temperature.

Formation is favoured when the metal is easily ionised, the non-metal readily accepts electrons, and strong crystal attractions release a large lattice enthalpy. Hydration can additionally stabilise ions in solution.

The period-3 halogen is chlorine. Its configuration ends 3s²3p⁵.