Chemistry, 02.10.2019 08:30 corbinfisher
An igneous rock originally has 4 grams of uranium-238 in it. when dated, the rock only contains 2.4
grams. what are the parent and daughter concentrations (in percentages) and what is its age?
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If you burn 10 kilograms of wood in a fire (combustion) what is the weight of the products after the fire has finished burning the wood?
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Stage in which a star’s outer layers have started to cool and grow outward?
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The graph indicates the running route for tobias. which best describes his run? from time 0 to 6, he went fast and then slowed down. from time 6 to 10, he was at his slowest. from time 12 to 14, he went very slow. from time 14 to 18, he went toward the starting point.
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Chemistry, 23.06.2019 02:50
Dumbledore decides to gives a surprise demonstration. he starts with a hydrate of na2co3 which has a mass of 4.31 g before heating. after he heats it he finds the mass of the anhydrous compound is found to be 3.22 g. he asks everyone in class to determine the integer x in the hydrate: na2co3·xh2o; you should do this also. round your answer to the nearest integ
Answers: 2
An igneous rock originally has 4 grams of uranium-238 in it. when dated, the rock only contains 2.4<...
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