Scientist typically use the international system of measurements, or the metric system. If you mean English as in England, then yes.<span> The United States' system of measurement is not usually used by scientists.</span>
Answer:
Protons, electron, and neutrons
Explanation:
Fe^2 O^3 + 6HCl --> 2FeCl^3 + 3H^2 O
C. If the mass or length of substance changes it's extensive