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.
The good news is that heartburn is largely avoidable if you steer clear of the top 10 heartburn foods. It also helps to avoid certain classic heartburn-inviting situations. From coffee and liquor to tomatoes and grapefruit, experts tell WebMD that certain foods are known heartburn triggers.