Oxygen's ups and downs in the early atmosphere and ocean
This is a carbonate rock in Zimbabwe used to trace sulfate levels in ... Sulfate, the second most abundant negatively charged ion in the ocean today, remains high when the mineral pyrite oxidizes easily on the continents and is buried in relatively small ...
Sandia Labs researcher develops fertilizer without the explosive potential
Knowing that in ammonium nitrate the ammonium ion is weakly attracted to the nitrate ion, and that the right chemical reaction can pull them ... where a mix of ammonium nitrate and calcium carbonate is currently used, making the soil more alkaline.
A Brief Remark On Carbon Dioxide Chemistry: Ethylene Carbonate Formation.
One of the easiest chemicals to make from the charcoal (and, dare I say it, coal) is ethylene, a gas with the formula ... Ethylene carbonate, when reacted with methanol, gives dimethyl carbonate, the potential fuel. Zeolites that have been modified by ion ...
Fertilizer that fizzles in a homemade bomb could save lives around the world
Sandia National Laboratories chemical ... fertilizer, Fleming said. "What they use now, ammonium nitrate with calcium carbonate—which makes soil more alkaline—doesn't make sense," he said. Danger to soldiers Sandia could have patented the formula ...
How it works: Gorilla Glass
Through that study, they found that placing the new glass in a potassium bath to encourage an ion exchange would strengthen the glass. But what’s ion exchange? From the Gorilla Glass website: Ion exchange is a chemical strengthening process where large ...