Charles law states that if given quantity of gas is held at a constant pressure, then its volume is directly proportional to the abosolute temperature. this law explains what

Visible light is located in the middle of the spectrum.

The reaction 2kalsi3o8 + 2(h+ + hco3-) + h2o  →  al2si2o5(oh)4 + 2k+ + 2hco3- + 4sio2 shows that feldspar kalsi3o8 is chemically altered by hydrolysis to form chalky-looking clay mineral kaolinite al2si2o5(oh)4. the chemical breakdown of potassium feldspar due to exposure to acidic water results to the mineral binding with the water molecule to become kaolinite with silica and potassium and bicarbonate ions in solution.

The answer is:   [d]:   "ultraviolet" {"  uv  "} .