Propane (C3H8) is burned in oxygen to produce carbon dioxide and water. How much heat is given off when 3.0 mol C3H8 are reacted with 5 mol O2?
1. 672 kJ
2. 1555 kJ
3. 2012 kJ
4. 4435 kJ
5. 6048 kJ
6. 7392 kJ
7. 916 kJ
8. 5122 kJ

Which statement is true about hcl? (5 points) select one: a. it is a salt because it increases the concentration of metallic ions. b. it is a salt because it is formed by the reaction of an acid and a base. c. it is an acid because it increases the concentration of hydroxyl ions. d. it is an acid because it increases the concentration of hydronium ions.

A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution

Achemical reaction is done in the setup shown, resulting in a change of mass. what will happen if the same reaction is done in a sealed container that is placed on the electronic balance?