Give the electron configuration for the valence shell for the following atoms. use parentheses to separate the number of electrons in the subshell(s). for example, for n enter 2s(2)2p(3) without space between each pair of orbital designations. the answer is case sensitive.

Covalent network solids typically have melting points and boiling points. the chemical formula of a network solid indicates in the molecule.

Achemist wants to extract copper metal from copper chloride solution. the chemist places 0.50 grams of aluminum foil in a solution containing 0.75 grams of copper (ii) chloride. a single replacement reaction takes place. (ii) chloride. a single replacement reaction takes place. which statement explains the maximum amount of copper that the chemist can extract using this reaction? a) approximately 0.36 grams, because copper (ii) chloride acts as a limiting reactant b) approximately 1.8 grams, because copper (ii) chloride acts as a limiting reactant c) approximately 0.36 grams, because aluminum acts as a limiting reactant d) approximately 1.8 grams, because aluminum acts as a limiting reactant

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.