Use the graph to answer these questions. The total energy of the products is

-3,811.92 kJ.
-1,273.02 kJ.
-2,538.90 kJ.

answer is -1273.02kJ

Define the kinetic molecular theory

Which statement best describes the he properties of iconic compounds ?

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.)