How many whole numbers lie between √ 8 and √ 80

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

(a) calculate the molarity of a solution that contains 0.0345 mol nh4cl in 400 ml of solution. (b) how many moles of hno3 are present in 35.0 ml of a 2.20 m solution of nitric acid? (c) how many milliliters of 1.50 m koh solution are needed to supply 0.125 mil of koh ?

How can you decide witch operations to use to slice a two step equation