Calculate the molarity of 0.50 mol MgCl2 in 750 ml of solution.

a) 0.38 M

b) 0.67 M

c) 0.75 M

d) 0.95 M

What is the mass of each element in a 324.8 sample of co2

Which describes fat? a: a carbohydrate that produces energy b: a nucleic acid that directs cell function c: a lipid that stores energy d: a protein that speeds up a chemical reaction

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.