Twenty-four grams of a substance require 270. Joules of heat to increase its temperature from 25 to 50. ˚C. What is the specific heat of the substance? SELECT AN ANSWER

2.2 J/ g ˚C

.45 J/ g ˚C

.15 J/ g ˚C

.0038 J/ g ˚C

pleas

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.