The heat of reaction for the process described in (a) can be determined by applying hess's law. the heats of reaction shown in the table below can be obtained experimentally or looked up in tables of enthalpy data. which two of these heats of reaction would be the easiest and safest to measure in the laboratory, and which two are better obtained through reference sources? why? hint: consider the procedure being conducted in this lab.

If you want to create an electrical current, which situation would produce a solution capable of this

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

Arectangle has a diagonal 20 inches long that forms angles of 60 and 30 with the sides. find the perimeter of the rectangle. for geometry