Identify the following reactions as exothermic or endothermic. YOU MUST USE THE FOLLOWING VOCABULARY WORDS in your answer
endothermic/exothermic (choose one)
Reactant
.
.
Thermal kinetic energy
Product
Chemical potential energy
1. CH. - 2C + 2H2 + heat
This is an
I know this because
2. 2Fe + 3C02 + 26.8kJ - Fe, O3 + 3CO
This is an
I know this because
3. 2HgO - 2Hg + O2
ΔΗ= +181 kJ
This is an
I know this because

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

What human activity increases beach erosion?

16. why must the number of electrons lost equal the number of electrons gained in every redox reaction? use 3 – 4 sentences in your own words to address this question. 18. what type of radiation is emitted when chromium-51 decays into manganese-51? show the nuclear equation that leads you to this answer. 19. a radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. what was the identity of the original nucleus? show the nuclear equation that leads you to this answer.