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.
Both caffeinated and decaffeinated coffee might cause heartburn by encouraging acid production. Other caffeinated drinks, citrus fruit juices, tomato juice and carbonated beverages might trigger your heartburn. Citrus fruit juices include orange, grapefruit, lemon and pineapple. In some cases, these drinks might not cause symptoms because triggers depend on each person.
People who say apple cider vinegar works for heartburn relief mix anywhere from 1 teaspoon to 2 tablespoons in a glass of water before drinking. Others swallow 1 teaspoon apple cider vinegar, which may cause a burning sensation for a moment before quick relief from heartburn.