The pentagon shown could be reflected over which line to be carried onto itself?

(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 ?

In what form is the following linear equation written y=9x+2

Which term describes the point where the perpendicular bisectors of the three sides of a triangle intersect?