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Ch. 10 The Mole
Test Description: This covers conversions: mole to particles, mole to mass, mole to volume and two step problems as well as terminology.
Instructions: Answer all questions to get your test result.
1) The number on the periodic table that is the mass of one atom of an element in amus or the mass of a mole of an element in grams.
A
molar mass
B
Avogadro's number
C
molar volume
D
atomic mass
2) The mass of the mole of any element or compound.
A
molar volume
B
atomic mass
C
molar mass
D
Avogadro's number
3) The volume occupies by a mole of any gas at STP
A
molar mass
B
atomic mass
C
molar volume
D
Avogadro's number
4) _________________ is the number of representative particles equal to one mole
A
molar volume
B
Avogadro's number
C
atomic mass
D
molar mass
5) An atom, ion, formula unit or a molecule depending on the way a substance can commonly exist
A
empirical formula
B
percent composition
C
representative particles
D
mole
6) The smallest whole-number ratio of the elements in a compound
A
mole
B
representative particles
C
empirical formula
D
percent composition
7) Percent by mass of each element in a compound
A
mole
B
representative particles
C
empirical formula
D
percent composition
8) The SI unit used to measure the amount of a substance
A
empirical formula
B
mole
C
percent composition
D
representative particles
9) Which combination of temperature and pressure correctly describes standard temperature and pressure (STP)?
A
0 degrees C and 101.3 kPa
B
100 degree C and 100 kPa
C
0 degrees C and 22.4 kPa
D
1 degree C and 0 kPa
10) What information id needed to calculate the percent composition of a compound?
A
the weight of the sample to analyzed and its density
B
the formula of the compound and the atomic mass of its elements
C
the weight of the sample to be analyzed and its molar volume
D
the formula the compound and its density
*select an answer for all questions
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