Which of the items below are true about acid rain? Acid rain affects our health. Acid rain increases precipitation. Acid rain increases the world's food supply. Acid rain is of greater concern in more-developed countries. Acid rain makes the soil less able to support agriculture.

Options (1), (4) and (5)

Explanation:

Acid rain can be simply defined as a type of precipitation where there is high concentration of hydrogen ion, mixed with water. This acids are formed when the toxic gases such as sulfur and nitrogen oxide are released into the atmosphere, and after the occurrence of condensation process, it leads to rainfall.

This acid rain can affect the lives on earth, as these toxic particles, mixed with air, can enter the bodies of organisms and can result in various lungs problems and other problems. Moreover, it is also responsible for contaminating the essential soil particles, thereby losing the fertility of the soil.

This acid rain is a major issue in the more-developed countries. It is because these countries are comprised of significantly large number of factories and industries and vehicles, that emits a large amount of toxic gases.

Thus, the correct answers are options (1), (4) and (5).

"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"