What is the volume of an oxygen tank if it contains 12 moles of oxygen at 273 k under 75 kpa?

What is the density of the black hole

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 atomic number, or number, is the described as the number of in the nucleus of an chemical element.