According to neil’s bohr’s atomic model , what occurs when an atom absorbs radiated energy?

a) an electron shifts from a lower energy to a higher one
b) an electron shifts from a higher energy lever to a lower one
c) an electron spirals towards the positively charged nucleus
d) an electron flies off the atom

Why is soap used to remove grease? a. its nonpolar end dissolves the grease. b. it makes the water bond with the grease. c. it chemically bonds with the grease. d. its polar end dissolves the grease.correct answer for apex - a, its nonpolar end dissolves the grease.

What is the empirical formula of c6h18o3? ch3o c2h5o c2h6o c2h5o5

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.