5.0g sample of mgcl2 may contain measurable amounts of other compounds as impurities. which of the following quantities is (are) needed to determine that the sample is pure mgcl2 ?

What layer of the atmosphere is directly above the troposphere?

Find the number of grams of hcl needed to react completely with .50 moles of magnesium.

Complete the following statements to describe solids, liquids, and gases. select the correct answer from each drop-down menu. a solid a definite volume and a definite shape. a liquid a definite volume and a definite shape. a gas a definite volume and a definite shape