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.
Most of the bacteria found by researchers are types that tend to live on people, usually in our skin and in our mouths and nasal passages. So it is likely that most of the bacteria came from our hands.ost of the bacteria found by researchers are types that tend to live on people, usually in our skin and in our mouths and nasal passages. So it is likely that most of the bacteria came from our hands.