Given that the molar mass of NaNO3 is 85. 00 g/mol, what mass of NaNO3 is needed to make 4. 50 L of a 1. 50 M NaNO3 solution? Use Molarity equals StartFraction moles of solute over liters of solution EndFraction. 6. 75 g 18. 9 g 255 g 574 g.

one negative thing it that it can kill water animals. another negative thing is it can cause the destruction of ecosystem. one way water pollution can be reduced is to conserve energy.

on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.

moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h

hence, the building installed with incandescent lights bears more electricity bill.