Which of the following statement(s) are true about the atoms of any element? a The number of protons in an atom of an element is unique to each element.
b The number of protons and neutrons in an atom of an element is unique to each element.
c A proton is an atom of one element that is identical to a proton in an atom of another element.
d The number of protons in an atom of an element is the same for all elements.

Abag of potato chips contains 2.00 l of air when it is sealed at sea level at a pressure of 1.00 atm and a temperature of 20.0 deg c. what will be the volume of the air in the bag if you take it with you, still sealed, to the mountains where the temperature is 7.00 deg c and atmospheric pressure is 70.0 kpa? assume that the bag behaves like a balloon and that the air in the bag is in thermal equilibrium with the outside air.