Mohammad observed that his water boiled much more quickly than his isopropyl alcohol. His peer group suggested some experimental error that may caused this to happen. which 2 experimental errors most likely caused the invalid data a. he could have mixed up the labels on the containers b. the heating vessel or hot plate was not at the same temperature c. his procedure was correct but tested a type of water that boils more quickly than isopropyl alcohol d. the boiling vessel might have been dirty so the solutions got mixed

This chart lists four kinds of polymers and their sources. what can be known about all four polymers, despite their differences? they come from living things. they share ionic carbon bonds. they are at least 100 monomers long. they are made of repeating subunits.

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.

To apply in a gold the individual gold atoms are united to each other by means of a metallic bond. how would you use the gold block to determine the atomic radius of a gold atom?