Rain water and normal water

Hi, please I need the chemical composition of rain water. Am working on something (the diffence between the impact of rain water and the normal water on the soil in relation to plant growth). Thanks.

There seem to be lots of studies on rain water composition available freely through the internet. Have you tried Google?

http://lmgtfy.com/?q=composition+of+rain+water

Thanks, I will. I will do that again.