2 Pb(NO3)2(s) → 2 PbO(s) + 4 NO2(g) + O2(g) 15. Solid lead(II) nitrate can be decomposed by heating. If an actual yield of 5.51 g PbO product is
recovered by heating 9.90 g Pb(NO3)2. what is the percent yield of PbO in the decomposition
reaction?
A 98.0%
B. 82.6%
C. 78.49
D. 55.79

Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.

Which of these is a density dependent factor? a. epidemic b. earthquake c. drought d. hurricane

Calculate the ph at the equivalence point for the titration of a solution containing 150.0 mg of ethylamine (c2h5nh2) with 0.1000 m hcl solution. the volume of the solution at the equivalence point is 250.0 ml. kb forethylamine is 4.7 × 10−4 .