Balance the following equation
mg(s)+ HCl H2)g)+MgCl2

Chemical kinetics what was the rate of reaction in trial 3? choose the closest answer.

Aperfume bottle is dropped in the corner of a room. the odor of the perfume can be detected on the other side of the room. which statement best describes this observation?

How many moles of lead are in 1.50 x 10^12 atoms of lead? could you explain the answer as well and not just give it to me i am refreshing for finals and i need to know how to do it