There are so many examples for that in different areas, like organic germanium compounds experiment carried out in our lab recently.
Here's one link: http://www.alfa-chemistry.com/products/organic-germanium-24.htm
A) because the capsule allows <span>bacteria to infect organisms under harsh conditions, such as in the acidic stomach</span>
The correct answer is <span>Ka = [H3O^+][HSO3^-]/[H2SO3] </span>
