A 14.0 L gas cylinder has been filled with 8.00 moles of gas. You measure the pressure to be 3.90 atm . What is the temperature inside the tank? I know I need to use the Ideal Gas Law (PV=nRT), but how can I even calculate R if I don't know the temperature? Please help!!

In any energy conversion, some of the energy is lost to the environment as question 5 options: electrical energy potential energy sound energy thermal energy

Arecipe calls for 1.2 cups of oil. how many liters of oil is this?

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.