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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
Embryos of different species look very similar, which shows that the organisms share a ancestor.
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Chemistry, 22.06.2019 11:00
Which element would mostly likely have an electron affinity measuring closest to zero
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Chemistry, 22.06.2019 12:40
Consider the directing effects of the substituents on salicylamide and predict the possible structures of the iodination products. which do you think will be the major product?
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Mathematics, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57
Health, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57
Mathematics, 06.05.2020 02:57