What is the common uses for Manganese

There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23

How can you use chemical equations to predict the products of the reaction you can carry out?

Arollercoaster car at the top of a hill has potential energy kinetic energy chemical energy light energy