how many grams of magnesium sulfate are required to make 575 ml of a 1.65% (m/v) solution
1.65% m/v means 1.65 grams/100 mL solution. You want to make 575 mL; therefore, you will need
1.65 x (575 mL/100 mL = ??. You can check your answer by (??grams/575 mL)*100 = ?? and you should obtain 1.65 if the answer above is correct.