Please help I have Chemistry exam tomorrow. 3. A sample of 2g of hydrated crystals of Magnesium sulphate (MgSO4.xH2O), with
an Mr, of 246. The crystals were heated on low flame, and it was found that 1.02g
water was present in the sample. Calculate the total mass of water present in the
hydrated crystal mentioned above, and determine the value of x.​

Ijust took the quiz. their is no coefficient needed. : )

Heating it up with cause a quicker reaction time

Van der waals forces are temporary electromagnetic forces established between uncharged atoms. some neutral molecules, when close together, can become temporarily “charged,” as electrons move around the atom. water is a polar molecule, the side of the molecule that the hydrogens bond to being more positive, and the opposite side bound to the lone pairs of electrons being more negative. this means that it participates in dipole-dipole interaction (non-polar exhibits dispersion forces), and it has the capacity for hydrogen bonding.