A helium balloon with an internal pressure of 1.0 atm and a volume of 4.50 L at 20.0⁰C is released. What volume will the balloon occupy at an altitude where the pressure is 60.78 kPa and the temperature is -20.0⁰C?

Volume occupied by volume is 6.48 L at an altitude where the pressure is 60.78 kPa and the temperature is -20.0⁰C

Explanation:

Combined gas law is the combination of Boyle's law, Charles's law and Gay-Lussac's law.

The combined gas equation is,

where,

= initial pressure of gas = 1 atm = 101.3 kPa

= final pressure of gas = 60.78 kPa

= initial volume of gas =  4.50 L

= final volume of gas = ?

= initial temperature of gas =

= final temperature of gas =

Now put all the given values in the above equation, we get:

The volume occupied by volume is 6.48 L at an altitude where the pressure is 60.78 kPa and the temperature is -20.0⁰C

your picture is not part of the scientific method.

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.