13. PLEASE HELP The volume of a gas is 4.0 L, the pressure is 1 atm, and the temperature is 200 K. A chemist
changes one factor while keeping another constant so that the new volume is 5.0 L. Which of
the following could be the new conditions? (4 points)
The final pressure is 0.8 atm, while temperature is kept constant.
The final temperature is 150 K, while pressure remains constant.
The final pressure is 1.5 atm, while temperature is kept constant.
m
The final temperature is 100 K, while pressure remains constant.

Determine the percent sulfuric acid by mass of a 1.61 m aqueous solution of h2so4. %

Earth's axis of rotation is tilted at an angle of 23.5 degrees. what is one change you would see on earth if its axis was not tilted?

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.