According to the half reactions represented above which of the following occurs in aqueous solutions under standard conditions? cu^2+ + 2e^- --> Cu(s) E°= .34 V
Cr^3+ + e^- ---> Cr^2+ (aq) E°= -.41 V

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

Acrystal that absorvd water from air is (blank)a. aqueousb. homogenousc. hygroscopicd. efflorescent

Achemistry student needs to standardize a fresh solution of sodium hydroxide. he carefully weighs out of oxalic acid , a diprotic acid that can be purchased inexpensively in high purity, and dissolves it in of distilled water. the student then titrates the oxalic acid solution with his sodium hydroxide solution. when the titration reaches the equivalence point, the student finds he has used of sodium hydroxide solution.calculate the molarity of the student's sodium hydroxide solution. be sure your answer has the correct number of significant digits.