2 Na (s) + Cl2 (g) → 2 NaCl is the balanced reaction for the formation of table salt.
Given 20 grams of Na (s) and 10 grams of Cl2, which reactant is in excess? And, how much NaCl should be produced from these amounts of the two reactants?
a. Na; 16.82 g
b. Cl2; 0.29 g
c. Cl2; 0.87 g
d. Na; 15.47 g

Which solution is an example of a nonelectrolyte? a. iodine in hexane b. sodium nitrate in waterc. acetic acid in waterd. hydrogen chloride in water

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Which of the following is the correct definition of chemical energy? a. energy an object has because of its motion or position b. energy resulting from the flow of charged particles, such as electrons or ions c. energy produced from the splitting of atoms d. energy stored in chemical bonds of molecules