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.
Vinegar, on the other hand, is acidic, so it is a bit of a surprise that many people find a sip of vinegar either straight or mixed into water is helpful against heartburn discomfort. In this sound clip, a radio show listener reports his experience using apple cider vinegar to alleviate symptoms of heartburn.