A weather balloon has at 27.0 C , 1.00 atm, with an initial volume of 2.00 liters is released into the atmosphere where the temperature is -23.0 C and the pressure is 0.500 atm.

3.41

Explanation:

(1.00atm) (2.00 L) /(27.0C) = (.500atm) (x)/ (-23.0C)

This is how you set it up because P1V1/T1 = P2V2/T2.

Then you can cross multiple, all units except Liters will cancel and you can solve for x and have your answer.  

the correct answer is b. a strong acid completely dissociates to its ions when dissolved in water. completely dissociates to and ions. a is incorrect because does not fully ionize to and ions and some remain as the compound . c and d are incorrect because, and do not fall into the category of bronsted lowry acids. a bronsted lowry acid is a proton donor and since both molecules do not have a proton to donate they are not bronsted lowry acids. likewise,   if we use the lewis acid definition, they cannot be acids. a lewis acid is an electron pair acceptor. both and have a complete octet so can not accept any electrons which disqualifies them as acids.