Draw the curved arrows to complete the given radical reaction mechanism involving bond breaking. There is a scheme of a reaction where CHCH3 with a benzene ring and an OCH3 group attached to the first (from left to right) carbon atom decomposes into an OCH3 radical and CHCH3 with a benzene ring attached to the first (from left to right) carbon atom and an unpaired electron on the first carbon atom. The reactant has two electron pairs at the O atom. The OCH3 radical has two electron pairs and one unpaired electron on the O atom.

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

"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"

i belive it is water