Which of the following best describes what the notation [CuSO4] means?

Based on your observations, determine the chemicalformula for CuSO 4 · xH2O(s).

Name the following compound. If the cation requires an oxidation state (Roman numerals), then make sure you put the name of the cation and the Roman numerals without a space in between, like iron(II) or copper(I).CuSO4

Valency of copper in CuSO4.5H2O is

The saturated CuSO 4(aq) shown above is leftuncovered on a lab bench at a constanttemperature. As the solution evaporates, 1.0 mLsamples of the solution are removed every threedays and the [SO42] in the samples is measured.It is observed that the [SO 42] in the solution didnot change over time. Which of the following besthelps to explain the observation?(A) As the solution evaporates, Cu 2+(aq) andSO42(aq) leave the beaker along with thewater molecules.(B) As the solution evaporates, the dissolution ofCuSO4(s) in the beaker decreases.(C) The evaporation of water is endothermic, somore CuSO4(s) dissolves exothermically inthe solution, which increases the [SO42].(D) As water evaporates, more CuSO 4(s)precipitates out of the solution in the beaker.Unauthorized copying or reuse ofany part of this page is illegal. GO ON TO THE NEXT PAGE.-17-

What is the formula for copper (l) sulfide?Multiple choice question.Cu2SCuS2Co2SCuSO4