A student writes a chemical equation as given below. What is the molecular formula of zinc chloride if the reaction follows the law of conservation of matter?

A. 2ZnCl
B. Zn2Cl
C. ZnCl2
D. 2ZnCl2

How many grams of oxygen gas are contained in a 15 l sample at 1.02 atm and 28°c? show your work.

Explain what happens at the saturation point when adding salt to water at room temperature.

Magnesium is the limiting reactant in this experiment. calculate the theoretical yield of mgo for each trial. trial 1: trial 2: data mass of empty crucible with lid trial 1: 26.688 trial 2: 26.681 mass of mg metal, crucible, and lid trial 1: 26.994 trial: 2 26.985 mass of mgo, crucible, and lid trial 1: 27.188 trial 2: 27.180