A closed container has within it 20 lbm of liquid and 20 lbm of vapor at 400 o F. Determine the total amount of heat, in BTU, that must be added to raise the temperature to 425 o F.

The tilt of the earth's axis of rotation is responsible for the a) ocean's tides. b) size of the moon. c) brightness of stars. d) earth’s seasons.

If you add 5.00 ml of 0.100 m sodium hydroxide to 50.0 ml of acetate buffer that is 0.100 m in both acetic acid and sodium acetate, what is the ph of the resulting solution? acetic acid: ka = 1.8. x 10-5

Compare and contrast solutions and suspensions