When a mixture of calcium carbonate and magnesium is heated in a
current of hydrogen, a violent explosion occurs...
1. magnesium carbonate : chalk
2. calcium carbonate: tea leafs for diet tea
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China US AI URGENT meeting adversial attack ( Alibaba site commercial attack )
https://www.abc.net.au/news/2026-05-12/trump-xi-beijing-summit-must-confront-ai-cold-war/106666482 https://www.thewirechina.com/2026/03/29/...
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