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Author Question: One liter of a solution of pH 9 has how many more hydroxyl ions (OH-) than 1 L o (Read 1095 times) |
For about 100 years, scientists thought that peptic ulcers were caused by stress, spicy food, and alcohol. Later, researchers added stomach acid to the list of causes and began treating ulcers with antacids. Now it is known that peptic ulcers are predominantly caused by Helicobacter pylori, a spiral-shaped bacterium that normally exist in the stomach.
In 1844, Charles Goodyear obtained the first patent for a rubber condom.
After 5 years of being diagnosed with rheumatoid arthritis, one every three patients will no longer be able to work.
Russia has the highest death rate from cardiovascular disease followed by the Ukraine, Romania, Hungary, and Poland.
Drugs are in development that may cure asthma and hay fever once and for all. They target leukotrienes, which are known to cause tightening of the air passages in the lungs and increase mucus productions in nasal passages.