Explanation:
Fe2o3+ 3co ---------. 2fe + 3co2
Altitude is height above sea level. The density of air decreases with height. There are two reasons, at higher altitudes there is less air pushing down from above,and gravity is weaker farther from earths center.
Answer:
If the substance is a liquid or solid, production of an odor would indicate a chemical change.
Explanation:
<span>Calcium phosphide hope this helped </span>
You're correct It's D :))))))))<span />