What is the equation for the enthalpy of vaporization?

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)

Which of the following statements accurately describes the sign of the work done on the box by the force of the push? a. positive b. negative c. zero

Asimple electrochemical cell contains two electrodes.