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i need a answer goish just tell me Edit :: This looks suspiciously like a homework question. It wouln't be called the "Average Atomic Mass" if it wasn't the average of all the isotopes, now wouldn' it?

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15y ago
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16y ago

to be accurate in your quantitative measurements.

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12y ago

The actual masses of the atoms are too tiny to work with easily. The reference isotope is now 12C.

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Q: Why do chemists use relative mass of atoms compared to a reference isotope rather than the actual masses of the atoms?
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Why do chemist use relative masses of atoms compared to a reference isotope rather than the actual masses of atoms?

because, the mass of an atom is too small to be easily used as a point of reference. Comparing it to the C-12 atom (so relative Atomic Mass) is much easier. I think this is the answer.


How can the relative and absolute ages of rock be determined?

By comparing the relative percentages of a radioactive (parent) isotope and a stable (daughter) isotope.


What isotope of carbon has been chosen as the reference isotope for atomic mass units?

The atomic mass may be considered to be the total mass of protons, neutrons and electrons in a single atom (when the atom is motionless). Relative isotopic mass is the relative mass of a given isotope scaled with carbon-12 as exactly 12.


What tells you how heavy an element's atoms are compared with atoms of other elements?

This is the relative atomic mass, which compares other atoms to the mass of I atom of the isotope carbon-12.


What is the relationship between radioactive isotope and radioactive dating?

In radiometric dating, the amount of a certain radioactive isotope in an object is compared with a reference amount. This ratio can then be used to calculate how long this isotope has been decaying in the object since its formation. For example, if you find that the amount of radioactive isotope left is one half of the reference amount, then the amount of time since the formation of the object would be equal to that radioactive isotope's half-life.


Why must radioactive decay must be constant in order for radiometric dating to be accurate?

Amount of certain radioactive isotope in an object is compared with a reference amount. this ratio can then be used amount.


Why must radioactive decay must be constant in order for radioactive dating to be accurate?

Amount of certain radioactive isotope in an object is compared with a reference amount. this ratio can then be used amount.


How do you find relative atomic mass?

By relating carbon 12 isotope


What is is relative abundance?

The concentration of each isotope of a natural chemical element.


What isotope of carbon has been chosen as the reference isotope for atomic mass unit?

carbon 12


What does the relative abundance tell you?

The concentration of each isotope of a natural chemical element.


What does relative abundance tell?

It tells you about how much of a particular isotope is present in the mixture