Practice Molecular Mass (3.5.1) - Atoms and Molecules

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9 questions

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6 sample questions

Question 1.
What is the molecular mass of water?
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Consider the atomic masses of hydrogen and oxygen.
Question 2.
What is the formula unit mass of sodium chloride?
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Add the atomic masses of sodium and chlorine.
3Question 3.
What is the molecular mass of a molecule of water (H₂O)?
- 16 u
- 18 u
- 20 u
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Add up the weights of hydrogen and oxygen.
4Question 4.
True or False: Molecular mass is applicable only to ionic compounds.
- True
- False
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Think about the type of bond in the compound.
Question 5.
A laboratory synthesized a compound C₄H₅O. Calculate its molecular mass and compare it with that of glucose (C₆H₁₂O₆).
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Use atomic masses for carbon (12), hydrogen (1), and oxygen (16).
Question 6.
What is the molecular mass of a compound made of 3 parts sodium, 1 part sulfur, and 4 parts oxygen?
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Calculate using the atomic mass of each component.

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