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Phenolphthalein's pH sensitivity is exploited in other applications: concrete has naturally high pH due to the calcium hydroxide formed when Portland cement reacts with water. As the concrete reacts with carbon dioxide in the atmosphere, pH decreases to 8.5–9. When a 1% phenolphthalein solution is applied to normal concrete, it turns bright pink.
Investors are focused on the potential extension of the stock market's bull rally heading into 2025. Wall Street experts highlighted the most important stock market charts to watch into next year.
In the form of boric acid, price per boron contained. Min. 99% pure. 6: C: Carbon: 2.267: 200 (5.54 × 10 18 kg) 0.122: 0.28: 2018: EIA Coal [19] In the form of anthracite, price per carbon contained, assuming 90% carbon content. There is a wide variation of price of carbon depending on its form.
It was a bumpy session in the stock market today. United States equities put together a strong session on Monday and opened higher again on Tuesday. However, stocks slipped in afternoon trading ...
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Gold and silver showed no sign of slowing their rise on Monday as investors continue to pour into precious metals. Gold futures touched fresh records, rising as much as 0.8% to hover near highs of ...
The Philadelphia Gold and Silver Index is an index of thirty [1] precious metal mining companies that is traded on the Philadelphia Stock Exchange.The index is represented by the symbol "XAU", which may be a source of some confusion as this symbol is also used under the ISO 4217 currency standard to denote one troy ounce of gold.
Stocks shook off a choppy start to finish higher Monday, as Wall Street kicked off a holiday-shortened week. The S&P 500 ended 0.7% higher after having been down 0.5% in the early going. The Dow ...