How do you find the absolute value of the complex number z=-1+sqrt(3i) ?

(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 ?

Write two subtraction equations that are equivalent to 5 + 12 = 17.

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25