Comparing Appearance, Relative Density, and Solubility In this task, you’ll observe and compare the appearance, relative density, and solubility of common household materials in water. Part A Observe the appearance of each material before it is mixed, its relative density, and how well it dissolves in water. Baking Soda Baking Powder Salt Sugar Flour Vinegar Cooking Oil Part B What observation about baking powder suggests that it is a mixture of substances?

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.