Find the volume of a sphere with radius 2.5 miles. use 3.14 as an approximation for pi. round the answer to two decimal places.
a. 36.82 miles3
b. 26.2 miles3
c. 65.42 miles3
d. 20.83 miles3

(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 ?

Find the distance between (0,5) & (-4,2)

Annabelle's homework is 75% it took her three hours how long should she estimate it will take her to complete her homework.