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Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?
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Use the drop-down menus to answer each question. which runner finished the 100 m race in the least amount of time? which runner stopped running for a few seconds during the race? at what distance did anastasia overtake chloe in the race?
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Chemistry, 22.06.2019 08:00
Match the mixture with the substance// i really need on this guys (it’s a pic btw)
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What is a neutralization reaction?...
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