A cotton swab is dipped into concentrated hydrochloric acid (producing hydrogen chloride gas) while a second on is dipped into concentrated aqueous ammonia (producing ammonia gas). Both cotton swabs ...

Ammonia is also commonly used in cleaners ... Your stomach contains hydrochloric acid, and too much of this causes indigestion. Indigestion (or antacid) tablets contain alkalis such as magnesium ...

A new study suggests battery recyclers could reduce environmental impacts and costs by replacing harsh chemicals with a neutral solvent to recover minerals.