This isn’t the first time he’s demonstrated infrared cooling, but the previous demonstration used Barium Sulfate microspheres. The process of making those microspheres is a bit beyond the ...

Although eels have very thin bones, which initially made it difficult for the X-ray to pick up their movements, the team overcame this challenge by injecting the eels with barium sulfate ...

The subject swallows a mouthful of barium sulfate, which is then propelled down the esophagus and into the stomach by a peristaltic contraction wave.

Explain why, in a test for sulfate ions, the sample is acidified with hydrochloric acid first. Carbonate ions also produce a white precipitate with barium chloride solution. The acid reacts with ...