Which element(s) are not balanced in this equation?
fe2o3 + 3 co → fe + 3 co2

a.
only the fe is unbalanced.

b.
only the o is unbalanced

c.
fe and o are both unbalanced.

d.
c and o are both unbalanced

This is so important ugh its 25 points

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?

In trying to determine whether dna or protein is the genetic material, hershey and chase made use of which of the following facts? a) dna contains sulfur, whereas protein does not. b) dna contains phosphorus, whereas protein does not. c) dna contains nitrogen, whereas protein does not. d) dna contains purines, whereas protein includes pyrimidines.