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Chemistry, 21.06.2019 20:30
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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Chemistry, 21.06.2019 22:30
For the following, determine the type of reaction and then give products.
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Chemistry, 22.06.2019 01:50
7. what temperature is need to just dissolve 50 g of nh4cl in 75 g of water? '
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Chemistry, 22.06.2019 03:50
Express the following number in scientific notation. 0.026890 =
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Balancing equation c2h6+o2> co2+h2o...
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