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.
Milk encourages the production of stomach acid and might promote acid reflux in the middle of the night. Raise the head of your bed four to six inches to avoid heartburn during sleep by using blocks under the bedposts. This raises your upper body. Extra pillows only raise your head.
1 Check with your health care team before increasing the amount of lemon in your diet and attempting to use it to improve health. Ask for advice on how to incorporate it and how much. You do not need to drink high amounts of lemon juice to gain benefits.  Lemon can cause heartburn.