Two unknown compound are tested. Compound I contain 15.0gram ohydrogen and 120.0gram of oxygen. Compound II contain 2.0gram of hydrogen and 32.0gram of oxygen. Are the compound the same. Explain your answer and state which law is applied ​

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.

Asubstance is a good conductor of electricity which of the following best explains a probable position of the substance in a periodic table

What is the molar mass of ca(cio4)2