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.
Effective Drinks. Decaffeinated, non-mint herbal tea; non-citrus juices such as apple juice; and plenty of water usually work effectively in a diet to protect you from heartburn. Penn Medicine advises drinking only small amounts of liquid during mealtime to avoid overworking the stomach.
Chronic heartburn is usually from acid reflux - stomach acid is getting past the little valve and into your esophagus. You also should know some natural ways to treat your heartburn. Learn them here. https://tr.im/BestCureHeartburn. The most immediate thing you can do is to stop drinking coffee and cola.