Chemistry, 28.02.2020 19:41 arlabbe0606
What does burning bread in a toaster demonstrate? (a) Energy can create a change. (b) Energy can cause motion. (c) A toaster creates its own energy. (d) A toaster is needed to burn bread.
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Chemistry, 21.06.2019 21:00
Consider the nuclear equation below. 239 > x + 4 he 94 2 what is x? 1.235 cm 96 2.243 u 92 3.235 u 92 4.243 cm 96
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Chemistry, 22.06.2019 23:00
What is the average rate of the reaction between 10 and 20 s?
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If a sample of radioactive isotopes takes 600 minutes to decay from 400 grams to 50 grams, what is the half-life of the isotope?
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What does burning bread in a toaster demonstrate? (a) Energy can create a change. (b) Energy can cau...
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