In living things, the source of the carbon-14 that is used in radiocarbon dating is carbon dioxide in the atmosphere.
Living things inhale oxygen, and exhale carbon dioxide into the atmosphere, which is why the air and atmosphere are so full of it.
Answer:
Explanation:
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In this case, since the equation for the ideal gas is:
For each gas, given the total volume, temperature (28.1+273.15=301.25K) and moles, we can easily compute the partial pressure as shown below:
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No, many liquids have surface tension such as mercury.
Answer:
It would be a physical change, because the atoms are rerranging to form new molecules!
Explanation:
For a chain reaction to occur each fission must produce at least one more fission reactions.
Nuclear chain reactions are series of nuclear fission, which involves splitting of atomic nuclei, each initiated by a neutron produced in a preceding fission. Each fission produces 2 to 3 neutrons. At least one of these neutrons on average has to hit another nucleus and initiate another fission, and thus the number of fission increase with time.
