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What do chemical reactions that absorb energy need to occur
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How do you date a sample of rock that you suspect as being one of the earliest on earth
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Awave has a wavelength of 15 mm and a frequency of 6 hertz. what is its speed?
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Graded assignment lab report answer the questions below. which combinations of substances resulted in a chemical change? for each metal that participated in a chemical change, write the type of metal it is, based on your examination of the periodic table. were there any metallic compounds that did not react with either the acid or the base? write the type of metal, based on your examination of the periodic table. make a general statement about the reactivity of the metals in this experiment.
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These are the components of the reservoirs of carbon that are exchanged in our environment.
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What do chemical reactions that absorb energy need to occur...
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