A helium balloon has a volume of 1.00 x 106 L at ground level with the pressure of 754 mm Hg and a temperature at 22.5 C. What is its volume when it ascends to the stratosphere with scientific instruments, where the temperature is 240 K and the pressure is 76.0 mm Hg?

You encounter a solution that is acidic and you decide to test it by adding a small amount of a strong acid. the ph lowers slightly but is approximately unchanged, and still remains acidic. what can you say about the solution? a. it is a buffer solution. b. it is not a buffer solution it is a strong acid solution. d. the solution has been neutralized. e. the solution has excess acid present