Final answer:
The formula unit mass of CaCO3 (Calcium carbonate) is calculated by adding up the atomic masses of all the atoms in its chemical formula. The formula unit mass of calcium carbonate is approximately 100.09 amu.
Step-by-step explanation:
The formula unit mass of a compound like CaCO3 (Calcium carbonate) is calculated by adding up the atomic masses of all the atoms in its chemical formula. Now, in CaCO3, we have one calcium atom, one carbon atom, and three oxygen atoms. From the periodic table, we can find that the atomic mass of Calcium (Ca) is approximately 40.08 amu, Carbon (C) is 12.01 amu, and Oxygen (O) is 16.00 amu. You should multiply the atomic mass of oxygen by three because there are three oxygen atoms in the formula. Therefore, the formula unit mass of CaCO3 = (40.08 amu for Ca) + (12.01 amu for C) + 3 * (16.00 amu for O) = 100.09 amu. So, the formula unit mass of calcium carbonate is approximately 100.09 amu.
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