Check every element at both sides
Element left side right side conclusion
Fe 2 1 not balanced
O 3+3=6 3*2=6 balanced
C 3 3 balanced
Answer: only Fe is unbalanced (2 atoms at the left side and 1 atom at the right side)
Answer:
Which type of chemistry studies the chemical reactions that occur in the human body? .
biochemistry
<span>When refrigerants are mixed, somebody must recover the mixture into a separate </span><span>container or tank.
</span>Refrigerant<span> is a mixture,</span> that can transform from liquid to gas and vice versa. Refrigerants <span>used in a </span>heat pump and refrigerators. They <span>should not be mixed together, one of the reason is because they are flammable.</span>
The coorect answer would be A