Chemistry: Matter and Change

Section 2: Mass and the Mole

Self Check Quizzes

1
How many moles of chlorine are in 100g chlorine (Cl)?

Element

Molar Mass (g/mol)

Hydrogen

1.01

Carbon

12.01

Chlorine

35.45


A)0.355
B)2.82
C)64.6
D)100
2
Which of the following quantites would have the greatest mass: one mole of carbon atoms, one mole of helium atoms, one mole of neon atoms?
A)one mole of carbon atoms
B)one mole of helium atoms
C)one mole of neon atoms
D)They would have equal masses.
3
Radium is a radioactive element that decays into radon gas. Its atomic mass is 226. How many moles in 500 grams of radium?

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A)2.2 moles
B)726 moles
C)3 x 1026 moles
D)0.452 moles
4
The atomic mass of hydrogen-1 is 1.008 and the atomic mass of helium-4 is 4.003. Find the difference in grams between 4 moles of hydrogen and one mole of helium.

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A)0.029 g
B)1.7 x 1022 g
C)0 grams
D)4.81 x10-26 g
5
What is the mass of 1.000 mole of carbon atoms?

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A)1 gram
B)12.01 grams
C)0.08326 grams
D)24.02 grams
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