Which metal reacts spontaneously with a solution containing zinc ions?
(1) magnesium (3) copper(2) nickel (4) silver

Which of the following would have less momentum than a 52 kg cheetah running at 10 m/s?

An alloy contains 66 g of pure zinc. what is the percentage of zinc in the alloy? express your answer to two significant figures and include the appropriate units.

The fact that the total amount of energy in a system remains constant is a(n)