Magnesium can be extracted by electrolysis of salts derived from sea water (3.5 wt% salts and 0.13 wt% Mg), or, better, from salt lakes such as the Dead Sea (34.2 wt% salts and 3.4 wt% Mg) or the Great Salt Lake (27 wt% salts and 1.1 wt% Mg). The electrical energy necessary to electrolytically extract 1kg of magnesium from pure salt (water free) is 40 kWh. Assume the salt is purified from a similar osmosis step as in question 1. What is the total energy cost to create a kg of Mg from seawater vs. the concentrated brine of the Dead Sea

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.

i think its 100.

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