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)

you'd use the equation that establishes a relationship between  energy  and  wavelength, which looks like this

e=h⋅cλ, where

λ  - the wavelength of the photon; c  - the speed of light, usually given as  3⋅108m/s; h  -  planck's constant, equal to  6.626⋅10−34j s

plug the value you were given for the energy of the photon in the above equation to get the wavelength

e=h⋅cλ⇒λ=h⋅ce

λ=6.626⋅10−34js⋅3⋅108ms−1.257⋅10−24j=1.581⋅10−1m