PLEASE HELP ME FAST

I'mma make a list for what you could describe fot the atomic structure :

* Electrons (more electrons than protons would make the atom negative) Their mass is negligible They are on the electron shell and the amount of shells they have will contribute to how negative the atom is.

*neutrons wouldn't have much of an effect because its neutral

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

thats a little if u want the answer just look it up on google thats what i do haha : )