What is the empirical formula for a molecule containing 46.8% si and 53.2% o?

a. si2o3
b. si2o
c. sio3
d. sio2

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

Draw the lewis dot structure for each of the following polyatomic ions

How does blood clotting prevent the entry of pathogens through cuts and wounds? answer asap,, this is due tomorrow. will mark as brainliest or whatever you call it : )