What is the concentration of a solution made by diluting 40.0 mL of a 2.4 M calcium carbonate Ca(CO3)2 solution to 100.0 mL?

As a part of an experiment a student burns propane to produce carbon dioxide and water she remembers that she must follow the law conservation of matter when writing a balanced chemical equation which of these equation adheres to the law of conservation of matter

C3h8o3 - glycerol major species present when dissolved in 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