HELP PLZZ!! Diamonds have a density of 32.7x10(-5) g/cm3 . How big is a diamond that has a mass of 09.45x10(-4) g?

Astudent made the lewis dot diagram of a compound shown. what is the error in the lewis dot diagram? a)an o atom should transfer all of its six electrons to mg because the formula is mgo b) both electrons of mg should be transferred to one o adam because the formula is mgo c) the electrons should be transferred from each o add him to capital mg because mg has fewer electrons d) the number of dots around mg should be four because it has to transfer two electrons to each o

What is the molar mass of ca(cio4)2

Chemistry worksheet - i am not sure what they are asking for exactly?