Which equilibrium constant expression(s) are for the following reaction. (X stands for the mole fraction of the indicated substance in its phase, which we have so far assumed equal to unity (one) for essentially pure phases.) P4(s) + 5O2(g)↔P4O10(s) Choose from the list below and enter the letters alphabetical order. (e. g. AH)

A) (XP4)eq G) (XP4)eq4
B) (pO2)eq H) (pO2)eq2
C) (XP4O10)eq I) (XP4O10)eq5
D) (XP4)eq-1 J) (XP4)eq4
E) (pO2)eq-1 K) (pO2)eq-5
F) (XP4O10)eq-1 L) (XP4O10)eq-2

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)