Write the number in scientific notation.
0.000779
a.
7.79 x 10 -4
b.
7.79 x 10 4
c.
7.79 x 10 -3
d.
7.79 x 10 -5

(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 shows how to solve the equation 3/4x=6 for x in one step?

Which ordered pair is a solution of the equation? 2x+3y=10