Multiple Choice
A 1.0 mol sample of which of the following compounds has the greatest mass?
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2. Atoms & Elements
Calculating Molar Mass
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How many atoms are present in one formula unit of the compound FeC5O5?
A
15
B
6
C
10
D
11
Verified step by step guidance1
Identify the elements present in the formula unit FeC5O5. The elements are iron (Fe), carbon (C), and oxygen (O).
Determine the number of atoms of each element in one formula unit: 1 atom of Fe, 5 atoms of C, and 5 atoms of O.
Add the number of atoms of all elements together to find the total number of atoms in one formula unit: total atoms = 1 (Fe) + 5 (C) + 5 (O).
Write the expression for the total number of atoms: \(\text{Total atoms} = 1 + 5 + 5\).
Sum the values to get the total number of atoms in one formula unit of FeC5O5.
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