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Use the information for the isotopes of X to calculate the average atomic mass of X, and identify the element. It can be divided into smaller particles that all have the same properties. It consists of subatomic particles, each having its own properties. It does not have all the properties of a larger amount of carbon. It is the same as an isotope and an ion of carbon.

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Final answer:

The average atomic mass for element X, which is carbon, can be calculated using the masses and abundances of its isotopes.

Step-by-step explanation:

The average atomic mass for element X can be calculated by multiplying the mass of each isotope by its abundance, and then summing up these values. Let's say element X has two isotopes: X-35 and X-37. X-35 has a mass of 35 amu and is 75% abundant, while X-37 has a mass of 37 amu and is 25% abundant. The average atomic mass of X can be calculated as follows:

  1. Calculate the contribution of each isotope: (35 amu x 0.75) + (37 amu x 0.25) = 35.5 amu
  2. Therefore, the average atomic mass of X is 35.5 amu.

Based on the information given in the question, element X is carbon (C).

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