Calculate the specific enthalpy of helium at 300 k and 1 atm and the rate at which enthalpy is transported by a stream of helium at the same conditions with a molar flowrate of 300 kmol/h. the specific internal energy of helium at 300 k and 1 atm is 3800 j/mol and specific molar volume is 24.63 l/mol.

answer: what the

explanation:

speed of light in vacuum is 300,000 km/s

speed of light in other mediums is given by the expression v = c/n, where c is the speed of light in vacuum and n is the refractive index of medium.

for the first medium v = 200,000 km/s

  so, refractive index of medium = 300000/200000 = 1.5

    1.5 refractive index is usually for glass. so first medium is glass.

for the second medium v = 250,00 km/s

so, refractive index of medium = 300000/250000 = 1.2

    1.2 refractive index is usually for water. so second medium is water.

for the third medium v = 0 km/s

so, refractive index of medium = 300000/0 = ∞

    ∞ refractive index is usually for opaque mediums. so third medium is opaque medium.