The relative mass of water in the formula, CaSO4 2H2O

How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same

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

Which formula can be used to calculate the molar mass of hydrogen peroxide