Amagma cools the first minerals to are rich in iron, calcium and magnesium

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution? a. 3.88 m, b. 1.03 m, c. 1.5 m, d. 15.5 m

How many moles of magnesium is 3.01 x10^22 atoms of magnesium?

In which situation can a mixture always be called a solution