Chemistry Concepts and Applications

Section 1: Counting Particles of Matter

Self Check Quizzes

1
A direct measurement on a sample of pure substance can be converted to a count of the number of particles through __________.
A)geometry
B)stoichiometry
C)telemetry
D)theory
2
What is the molar mass of carbon dioxide?
A)6.02 × 1023 g/mol
B)12.0 g/mol
C)32.0 g/mol
D)44.0 g/mol
3
How many atoms are in 34.6 g of carbon?
A)1.74 × 1024 atoms
B)12.1 × 1023 atoms
C)2.88 atoms
D)0.00554 atoms
4
How many atoms of carbon are in a pure sample of carbon having a mass of 72.0 g?
A)3.6 x 1024 atoms
B)36 x 1024 atoms
C)3.6 x 1023 atoms
D)4.33 x 1025 atoms
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