(a) How many photons (wavelength = 590 nm) must be absorbed to melt a 2.70-kg block of ice at 0 °C into water at 0 °C?
(b) On average, how many H₂O molecules does one photon convert from the ice phase to the water phase? Take the latent heat of fusion of water to be 335 kJ/kg.
a) (a) 1.82 x 10²⁵; (b) 6.02 x 10²³
b) (a) 6.02 x 10²³; (b) 1.82 x 10²⁵
c) (a) 2.25 x 10²⁴; (b) 3.01 x 10²⁴
d) (a) 3.01 x 10²⁴; (b) 2.25 x 10²⁴