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.
One large egg white contains 3.6 grams of protein -- compared with 2.7 grams of protein found in egg yolks, according to the U.S. Department of Agricultureâs National Nutrient Database. Although egg whites are a source of dietary potassium, the yolks are rich in vitamin A, phosphorus, iron, zinc and vitamin D.