THE most widely used chemical actinometer for ultraviolet radiation is based on the photochemical decomposition of oxalic acid in solutions of oxalic acid and urany 1 oxalate, and subsequent titration ...

An acid-base indicator is a substance that changes color as the pH of the solution changes. Indicators work because they are weak acids which when in solution, exist in equilibrium with their ...

A chemical injected before MRI scans to help create sharper images may cause some patients to experience a potentially deadly complication in rare cases, a new study suggests. Researchers from the ...

Rhubarb is next to impossible to kill. Here in northern Vermont, rhubarb is about the first thing that pops up in our garden in the spring—and that’s not due to us; over the years, we’ve inadvertently ...