Which acid is the best choice to create a buffer with ph= 7.64?
a. nitrous acid (hno2),pka=3.34
b. hypochlorous acid (hclo),pka=7.54
c. acetic acid (hch3co2),pka=4.76
d. chlorous acid (hclo2),pka=1.95

24. a sports ball is inflated to an internal pressure of 1.85 atm at room temperature (25 °c). if the ball is then played with outside where the temperature is 7.5 °c, what will be the new pressure of the ball? assume the ball does not change in volume nor does any air leak from the ball a) 0.555 atm b) 1.74 atm c) 1.85 atm d) 1.97 atm

Aroom with dimensions 7.00m×8.00m×2.50m is to be filled with pure oxygen at 22.0∘c and 1.00 atm. the molar mass of oxygen is 32.0 g/mol. how many moles noxygen of oxygen are required to fill the room? what is the mass moxygen of this oxygen?

Which type of intermolecular attractions holds ammonia molecules together with other ammonia molecules?