Determine the molecular formulas for compounds having the following empirical formula and molar mass:

C2H8S; experimental molar mass 192 g/mol

Iknow the answer is a but i don't know why

State one important difference between a physical change and a chemical change?

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action