How many moles of mgs2o3 in 197 grams

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

When the speed of the bottle is 2 m/s, the average maximum height of the beanbag is m.

What is the percent by mass of oxygen in fe2o3