how many liters of oxygen are there if the gas is in a container at 2 atm, 20 C and there are 2 mol of O2

Electric charge is what ? a. kinetic energy b. radiation c. discovery d. electricity

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)

Why is retrograde motion an apparent motion