a. A student weighs out 9.18 g ofCrSO4, transfers it to a500. mL volumetric flask, adds enough water todissolve the solid and then adds water to the 500mL mark on the neck of the flask.
Calculate the concentration (in molarity units) ofchromium(II) sulfate in the resulting solution?______M
b. In the laboratory, a student adds 13.3 g ofaluminum acetate to a 125 mLvolumetric flask and adds water to the mark on the neck of theflask. Calculate the concentration (in mol/L) of aluminumacetate, the aluminum ion and theacetate ion in the solution.
| [Al(CH3COO)3] | = __M |
| [Al3+] | = __M |
| [CH3COO-] | = __ M |
c. Calculate the mass, in grams, of manganese(II)iodide that must be added to a 250-mLvolumetric flask in order to prepare 250 mL of a0.193 M aqueous solution of the salt. ____g
