Understanding the nature of pH has bedeviled beginning (and not-so-beginning) chemistry students for nearly as long as chemistry has had students. It all seems so arbitrary, being the base-10 log ...

The 1.8 Å resolution structure of the yeast copper chaperone for superoxide dismutase (yCCS) reveals a protein composed of two domains. ... The two sulfate ions are shown in gray.

Copper sulfate has been used in agriculture since the 1800s, at least. In the U.S. it is widely used as a fungicide on organic and conventional crops, and it is also found in some fertilizer products.

In fact, copper sulfate is classified as harmful if swallowed and can cause serious eye damage. So make sure you are wearing gloves and safety goggles. Speaker one Now, ...