Need help with both questions please
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Answers: 3
Mathematics, 21.06.2019 23:20
Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g
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Mathematics, 22.06.2019 00:10
Hello, i need compare km^2 and km. what's difference in this?
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Biology, 21.07.2019 08:00
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English, 21.07.2019 08:00
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