Formula Mass Worksheet
Calculate formula mass for various chemical compounds, including ionic and covalent substances.
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Formula Mass Worksheet
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Read each question carefully and provide your answers in the space provided. Show all your work for calculations.
1. The sum of the atomic masses of all atoms in a compound's formula unit is called the .
2. Atomic mass units (amu) are often used to express .
3. Which of the following compounds has the largest formula mass?
H2O
CO2
NH3
CH4
4. Calculate the formula mass for calcium chloride (CaCl2). (Atomic masses: Ca = 40.08 amu, Cl = 35.45 amu)
5. Determine the formula mass of glucose (C6H12O6). (Atomic masses: C = 12.01 amu, H = 1.01 amu, O = 16.00 amu)
6. What is the formula mass of sulfuric acid (H2SO4)? (Atomic masses: H = 1.01 amu, S = 32.07 amu, O = 16.00 amu)
7. The formula mass of an element is the same as its atomic mass.
True
False
Match the compound with its approximate formula mass (in amu).
8. NaCl
a. 18.02 amu
9. H2O
b. 58.44 amu
10. O2
c. 32.00 amu
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