When the reaction 2h2s(g) 2h2(g) + s2(g) is carried out at 1065°c, kp = 0.012. starting with pure h2s at 1065°, what must the initial pressure of h2s be if the equilibrated mixture at this temperature is to contain 0.250 atm of h2(g)?

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.)