Hi, how do we calculate molar mass for Hg and ZnO ?

The speed of light is around 6.706×10^8 miles per hour. what is the speed of light in units of miles per minute?

The diagram below shows a cell placed in a solution.a cell is shown placed inside a beaker. it is labeled cell. the solution inside the beaker is labeled 40% salt solution and the solution inside the cell is labeled 20% salt solution.only water is allowed to move in and out of the cell. what will most likely happen to the cell? it will expand as water moves out of it. it will shrink as water moves out of it.it will expand as water moves into it. it will shrink as water moves into it.

Can someone me out on this question for my national 5 chemistry homework