The horizontal lines are parallel and pg=qr=rs. what is xu? a)4.5 b)2.25 c)6 d)3

Asoccer ball manufacturer wants to estimate the mean circumference of soccer balls within 0.1 in

(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 number should be added to both sides of the equation to complete this square? x^2-10x=7