What is a light-year?

a. the distance light travels from the sun to the earth
b. the distance light travels in one orbit of the moon
c. the distance light travels in one earth year
d. the time it takes light to travel across the universe

What is the value of keq for the reaction expressed in scientific notation

When electrolyzing copper (ll) chloride, what reaction takes place at the anode? what reaction takes place at the cathode?

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.