How does the reaction quotient, q compare to k (q > k, q < k, or q = k) immediately after the following things are done (before equilibrium is re-established). explain your answers (“it is __ because ”). a. addition of hcl(aq) b. addition of cacl2(s) c. addition of agno3

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2

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.

What type of matter is made of only one kind of atom