A weather balloon contains 13.0 L of helium at a pressure of 1.01 atm and a temperature of 21.0°C. If this had been stored in a 5.50-L cylinder at 29.0°C, what must the pressure in the cylinder have been?

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What is the number of moles in 15.0 g ash3?

What are the 4 phases of matter in order of increasing engery content?

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.