Atomic Limitations and Atomic Mass Quiz

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Questions and Answers

What is the definition of atomic mass?

The mass of an atom relative to the mass of one atom of helium-4
The mass of an atom relative to the mass of one atom of oxygen-16
The mass of an atom relative to the mass of one atom of carbon-12 (correct)
The mass of an atom relative to the mass of one atom of hydrogen-1

What is the formula used to calculate the average atomic mass of an element?

RA(1) + RA(2) / RA(1) × at. mass (1) + RA(2) × at. mass (2)
RA(1) × at. mass (1) + RA(2) × at. mass (2) / RA(1) + RA(2) (correct)
at. mass (1) + at. mass (2) / RA(1) + RA(2)
RA(1) × RA(2) / at. mass (1) + at. mass (2)

What is the difference between molecular mass and formula mass?

Molecular mass is the mass of a formula unit, while formula mass is the mass of a molecule.
Molecular mass and formula mass are the same thing.
Molecular mass is the mass of a mixture, while formula mass is the mass of a compound.
Molecular mass is the mass of a molecule, while formula mass is the mass of a formula unit. (correct)

What is the equivalent mass of an element or compound?

The mass of an element or compound that would combine with or displace (by weight) 1 part of hydrogen or 8 parts of oxygen or 35.5 parts of chlorine. (A) Signup and view all the answers