By varying the proportions of copper and zinc, the properties of the brass can be changed, allowing hard and soft brasses. The density of brass is approximately .303 lb/cubic inch, 8.4 to 8.73 grams per cubic centimetre.
* Peptic ulcers. * Smoking cigarettes. * Drinking carbonated beverages. * Consuming fatty or spicy food, citrus fruits, tomato products, onions and chocolate. * Gastritis. * Taking medications including ibuprofen, aspirin, and certain drugs used to treat hypertension.
1 These fruits contain natural antacids that may help relieve your heartburn over time. 2  Try apple cider vinegar. 3  Some people find relief by drinking a mixture of 1 tablespoon of raw apple cider vinegar in 8 ounces of water before each meal.