25. Calculate the number of molecules present in each of the following samples.

b. 6.37 g of carbon monoxide

This chart represents the melting point of several substance. what besy explains the high melting point of the salt?

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

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.