Carbon dioxide is formed when two oxygen atoms chemically combine with a carbon atom. which term best describes carbon dioxide?
a. mixture
b. compound
c. atom
d. element

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

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m