Example: Calculate the pH of a buffer solution that initially consists of 0.0400 moles of ammonia and 0.0250 moles of ammonium ion, after 20.0 mL of 0.75 M NaOH has been added to the buffer. Ka for ammonium ion is 5.6 x 10 -10.
There are two types of bacteria. Aerobic bacteria live with oxygen, love the company of food particles in the mouth and feed on sugar. Anaerobic bacteria exist without oxygen and feed off dead skin cells and other bacteria.
Shares & Saves. Save. Bacteria in your mouth can build up and eventually cause a tooth infection, which in turn may spread to the sinuses, lymph nodes and other parts of the body. A blow to the mouth may also kill tooth pulp and lead to infection.If left untreated, infections can kill.hares & Saves. Save. Bacteria in your mouth can build up and eventually cause a tooth infection, which in turn may spread to the sinuses, lymph nodes and other parts of the body. A blow to the mouth may also kill tooth pulp and lead to infection.