The nitrogen cycle requires different types of bacteria.
What objects are we referring to?
5.5 moles
2.0=x/2.75
2.0*2.75= x/2.75 (2.75)
5.5=x
Not kidding you the answer is, more than one
The answer is A. Melting snow because it is a physical change because you can then trun around and make it snow again
Physical change you can turn it back to the original
Chemical you can not