What is the difference between a Mm and a mm? Which is the larger one Mm or one mm?

Iwll give extra points to who gets this for ! what type of reaction is this? ?

How many electrons does silver have to give up in order to achieve a sido noble gas electron configuration

6. what does the symbol ah stand for? o one calorie given off by a reaction the specific heat of a substance the heat capacity of a substance the heat of reaction for a chemical reaction