A chemist prepares a solution of sodium nitrate by measuring out of sodium nitrate into a volumetric flask and filling the flask to the mark with water. Calculate the concentration in of the chemist's sodium nitrate solution. Round your answer to significant digits.

air quality

poor drinking water

and heavy polution

can lead to poor health

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

hurricanes form when warm, moist air from the ocean surface quickly rises into the atmosphere and forms storm clouds and rain. when the clouds are formed, heat is released which warms the cool air in the upper regions of the atmosphere so that the cycle can continue. which two phases of the water cycle are repeated in this process?