A 1,628 g-sample of a hydrate of magnesium iodide is heated until the mass has decreased to 1,113 g and all the water has been boiled off. Use calculations to determine the numerical value of x in the formula Mgl x H2O of this hydrate.​

i believe it is 40–40–20%

explanation:

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.

it is stable as it is in group 0 which have full outer shells of electrons