Which coefficients balance this equation?
_h2 + _n2 -> _nh3
a. 1, 2, 3
b. 2, 3, 2
c. 3, 1, 2
d. 4, 1, 3

What is the mass of 8 moles of sodium atoms

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 identities of substances are the same before and after which type of change