The specific heat of water is 1.00 cal/gC

The specific heat of ice is 0.500 cal/gC

The specific heat of steam is 0.480 cal/gC

The latent heat of fusion is 80.0 cal/g

The latent heat of vaporization is 540.0 cal/g

Given the above information, determine how much heat (in calories) is absorbed by a 125 gram sample of ice at a temperature of - 20 degrees Celsius when it warms to 125 grams of steam at 125 degree Celsius?

Answers are rounded to two digits to the right of the decimal.

scattering of light by tiny particles in air to produce the colors we see on sky, is dependent on the following factors:

(i) wavelength of light

(ii) size of the scattering particle  

(iii) distance traveled by light through the atmosphere.

according to rayleigh's law of scattering, the amount of scattering is inversely proportional to the fourth power of its wavelength. shorter the wavelength, greater is its scattering. hence violet/blue light is scattered more than red.

sun's light is a composite light ( visible light) with wavelengths in the range 400 nm (violet) to 700 nm (red). as sunlight passes through our atmosphere, the molecules of air scatter light according to their wavelengths. during sunrise and sunset, the sun's position is below the horizon. hence light from the sun travels a greater distance in the atmosphere when compared to its position a noon.

as sunlight enters the earth's atmosphere, blue light is scattered away and at the end of its journey in the sky, only red and orange wavelengths remain in the beam.

hence at sunrise and sunset, the sky appears reddish orange.

blue light is scattered in different directions by the tiny molecules of air. blue is scattered more than other colours because it has a shorter distance to travel which results in smaller waves. this is why we see a blue sky most of the time.