How can you prepare 100.0 ml of 0.400 m cacl2 from a stock solution of 2.00 m cacl2.

Use the dilution equation to calculate the volume of the stock solution required.

Stock solution volume required is 20.0 mL.

Add water to concentrated solution to reach the desired volume.

The volume of water to add is 80.0 mL.

- lead + phosphoric acid = hydrogen + lead(ii) phosphate

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.