35 points
Graph.
y= 5/3x–4

(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 ?

What is the area of the trapezoid shown ?

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)