Q1:The concentration of KCl in a solution made by mixing 25.0 mL of 0.100 M KCl with 50.0 mL of 0.100 M KCl is ________ M.a. 125b. 0.0500c. 0.100d. 0.0333e. 0.0250Q2:How many grams of NiSO4 ·7H2O would be required to prepare 500 mL of a solution that is 0.300 molar (i.e. 0.300 mol L-1) in NiSO4(aq)?a. 0.534 gramsb. 14.3 gramsc. 23.2 gramsd. 42.1 gramse. 52.2 gramsQ3:The concentration (M) of an aqueous methanol produced when 0.200 L of a 2.00 M solution was diluted to 0.800 L is ________.a. 0.400b. 0.500c. 8.00d. 0.200e. 0.800Q4:________ g of CaF2 is formed when 47.8 mL of 0.334 M NaF is treated with an excess of aqueous calcium nitrate.a. 2.49b. 1.25c. 0.472d. 0.623e. 0.943Please provide detailed explanation or worked solutions.
