PLZ HELP! Use the worked example above to help you solve this problem. An ideal gas at 24.9°C and a pressure 1.40 105 Pa is in a container having a volume of 1.00 L.
(a) Determine the number of moles of gas in the container.

(b) The gas pushes against a piston, expanding to twice its original volume, while the pressure falls to atmospheric pressure. Find the final temperature.
Thanks!

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

the electron configuration that you gave me has 16 electrons ergo it has 16 protons ergo it is the element sulfur.