Approximately how many moles of iron must react to produce 2.05 moles of rust? (Fe + O2 -> Fe2O3)

Which actions would increase the rate at salt dissolves in water? stir the water? crush the salt? use less water? heat the water? cool the salt

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

How have the greenhouse gasses increased from the year 2000 to 2018