During a chemical reaction, elemental phosphorus is reduced. As a result, what else must be about this reaction? A. Another reactant must be reduced
B. Another reactant must be oxidized
C. The oxidation number of phosphorus must equal the oxidation number of another element in the reactants.
D. The oxidation number of phosphorus must equal -1 times the oxidation number of another element in the products.

It has been two weeks since charles met with daniel, a dietitian, who provided charles with a menu for weight loss. charles and his mother are going back to see daniel again with a chart of the food charles has eaten. the following lists what charles ate in one day: breakfast 1 banana, 1 cup of nonfat milk, 1 egg lunch 1 cup of carrots, 3 oz of steak, 1 apple, 1 cup of nonfat milk dinner 6 oz of skinless chicken, 1 baked potato, 3 oz of broccoli, 1 cup of nonfat milk

How many liters of hydrogen gas will be produced at stp from the reaction of 7.179×10^23 atoms of magnesium with 54.219g of phosphoric acid (h3po4) the equation is 3mg + 2h3(> mg(po4)2+3h2

State one important difference between a physical change and a chemical change?