Determine the freezing point of a 1.50 m aqueous solution of ammonium phosphate. (hint: you will need to look up Kf for water in your notes or book). Make sure to give your answer to three significant figures and do not include a unit. 270

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

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.

Who determined the nature of chemical bonds?