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.
There are 100 million bacterias in every millilitre of saliva in your mouth. Over 600 million species. These are some germs in your mouth. Streptococcus mutans (S. mutans) is â¦ similar to tooth decay, it decays your tooth enamel. Porphyromonas gingivalis is gum diseases. The scientist even found a new bacteria called Prevotella histicola.