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.
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.