This balanced equation shows us the ratios of reactants and products, so for every 3 oxygen molecules, we see that 4 iron atoms react as well. The answer is 4.
1. A - atoms
2. B - protons electrons and neutrons
Answer:
<h2>8.89 g/mL</h2>
Explanation:
The density of a substance can be found by using the formula

From the question we have

We have the final answer as
<h3>8.89 g/mL</h3>
Hope this helps you
C. Reduced cost of watering i guess
The answer is C :
It controls the entry and exit of substances.