% ___of $60 = $45
Please helppp

(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 ?

Find the rate of change for the situation.you run 7 miles in one hour and 21 miles in three hours.

Write the equation of the circle centered at (10,-2) with radius 2