Asample has a mass of 35.4 g and a volume of 36.82 ml. what is the density of the sample?

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

Avariable that is not being directly tested during an experiment should be changed varied experimented controlled