Can someone answer it? Please and thanks

(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 ?

In which form is the following function written? y = - 2(x – 3)(x + 5)

What are the digits that repeat in the smallest sequence of repeating digits in the decimal equivalent of 24/11?