Help me with this science question on the middle one..

How many molecules of sucrose c12h22o11 are there in 454 grams of sucrose

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

If a polyatomic ionic compound has gained two hydrogen ions, then how does its name begin?