Consider the following neutral electron configurations in which n has a constant value. which configuration would belong to the element with the most negative electron affinity, ?
a. 2s²
b. 2s² 2p²
c. 2s² 2p⁵
d. 2s² 2p⁶

Non renewable resources like petroleum eventually

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.

8) warming your hands by a fire is an example if which heat transfer? a. conduction b. convection c. radiation d. none of these