The organic material in coal is composed mainly of carbon, oxygen, hydrogen, nitrogen, and sulfur. The heat of metamorphism destroys the organic molecules of coal, volatilizing the oxygen, hydrogen, nitrogen, and sulfur. What remains is a nearly pure carbon material that crystallizes into mineral graphite.
Egg White Nutrition Basics. According to the Egg Nutrition Center (ENC), the average egg contains about 6.29 grams of protein, 3.6 of which come from the egg white. In addition to proteins, other nutrients found in the egg white are riboflavin, niacin, folate, vitamin B12, calcium, iron, copper, zinc and sodium.
Egg whites are a low-calorie, fat-free food. They contain the bulk of the eggâs protein. The egg white contains about 4 grams of protein, 55 mg of sodium and only 17 calories. A single egg white also offers 1.3 micrograms of folate, 6.6 mcg of selenium, 2.3 mg of calcium, 3.6 mg of magnesium, and 4.9 mg of phosphorus and 53.8 mg of potassium.