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(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 to determine whether two known pairs of points are on the same line.

Solve the system of equations using the linear combination method. {4x−3y=127x−3y=3 enter your answers in the boxes.