Helio gaseo con un volumen de 2,60 L a 0,180 atm de presión y una temperatura de 41,0 "C, se calienta hasta duplicar la presión y el volumen. a) Calcule la temperatura final. (4 puntos) b) ¿Cuántos gramos de helio hay? La masa molar del helio es de 4,00 g/mol. (4 puntos)

Which statement is the best definition of an atom? a) anything that has mass and occupies space. b) the smallest particle that has the properties of an element. c) a substance that cannot be broken down chemically into simpler substances. eliminate d) the smallest unit of a substance that exhibits all of the properties characteristic of that substance.