А of water molecules would just about fill a tablespoon.
A. pound
B. kilogram
C. mole
D. gram

If a substance is in the gas phase, which of qualities of the gas will stay constant? a: volume b: mass c: shape d: position of particles

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

What is the equation for electrical work?