What is the molarity of a solution containing 340 grams of calcium oxide dissolved in 4.00 liters of water?

What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots

The polymer used for the nonstick surface of cooking utensils is 24.0%c and 76%f by mass. what is the empirical formula of this polymer?

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy