Help plz i gotta turn this test soon

(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 ?

Which statements about these triangles is true

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4