Which type of electromagnetic radiation emitted by the sun strikes the earth in the greatest amount? A. visible light
B. infrared radiation
C. ultraviolet radiation
D. radiowaves
E. X-rays
.

Ultraviolet radiation makes up just over 8% of the total solar radiation. Each of these bands has a different impact on the environment. Most of the solar radiation that reaches Earth is made up of visible and infrared light. Only a small amount of ultraviolet radiation reaches the surface.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"

i think that the answer is c