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.
Some people tell me they drink two cups of coffee a day and that they get it at Starbucks. That's like six cups a day.. If you have heartburn, you can likely consume a 3- or 4-ounce cup of coffee each morning with no problem. But if you guzzle coffee all day long, then, yes, heartburn is a consequence.