Carbon-14 dating assumes that the carbon dioxide on earth today has the same radioactive content as it did centuries ago. if this is true, the amount of 14c absorbed by a tree that grew several centuries ago should be the same as the amount of 14c absorbed by a tree growing today. a piece of ancient charcoal contains only 20% as much of the radioactive carbon as a piece of modern charcoal. how long ago was the tree burned to make the ancient charcoal? (the half-life of 14c is 5715 years. round to the nearest year.)
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Chemistry, 21.06.2019 16:00
Nickel crystallizes in the face-centered cubic (fcc) lattice. the density of the metal is 8902 kg/m3. calculate the radius of a nickel atom.
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Chemistry, 22.06.2019 13:00
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Chemistry, 22.06.2019 14:30
Need ! asap will mark 10 pts using the room temperature line (orange line) and your periodic table, make lists that identify the state of matter (gas, liquid, or solid) in which each element you plotted exists at room temperature. explain your answers
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Chemistry, 22.06.2019 16:30
At 20°c, a sample of h2o liquid and a sample of co2 gas each have the same average kinetic energy. why is one a liquid and the other a gas at this temperature?
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Carbon-14 dating assumes that the carbon dioxide on earth today has the same radioactive content as...
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