CHEM B: U3L4/5 Heat of Combustion Answers:

B

A

D

B

A

C

Step #1: Sorry didn’t get this

Step #2 72500

Step #3 90800

Step #4 491000

Step 5# 622,500

158 Calories

endothermic

Asolution has a ca2+ concentration of 0.049 m and an f- concentration is 0.147 m at equilibrium. the value of ksp for caf2 at 25°c is 4.0 x 10-11. will this solution form a precipitate? yes no

What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air

Substance x has a fixed volume, and the attraction between its particles is strong .substance y had widely spread out particles and can be compressed what can most likely be concluded about these substances