please do all three problems

Gjeton 4 Not yet anited Marked out of 1.00 Potassium permanganate (KMno) solutions are used for the determination of iron in samples of unknown concentration. As a laboratory assistant, you are supposed to prepare 1200, mi. of a 0.300 M KMnO solution. What mass of KMno, in grams, do you need? Answer 5 Not you Antwered outo 9.00 What is the molar concentration of a solution of sulfuric acid. H. SO, I 7.72. react completely with 0.102 g of NaOH which was dissolved in enough water to make 200 mL of solution? Hint given in feedback Answer 51.0 mL of 3.70 M sodium hydroxide is combined with 360 mL of 1.80 M magnesium chloride What mass in grams of solid forms? (Hint the total or overall reaction is most useful in doing calculations) Additional hint given in feedback Du 6 Not yet ered Marked out of 100