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Chemistry CH 3 : The Mole Flashcards | StudBud
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Chemistry CH 3 : The Mole
Chemistry CH 3 : The Mole
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1
Which of the following does not obey the Law of Multiple Proportions?
SO2 and SO3
O2 and O3
H2O and H2O2
PbO and PbO2
2
Pressure is defined as the
the amount of space in an object
the amount of work over a period of time
the average kinetic energy of particles
force per unit of area
3
Who came up with the Atomic Theory?
Aristotle
Democritus
Dalton
Avogadro
4
The mass of one mole of atoms is the
atomic number
molar mass
molecular mass
atomic mass
5
Which is not a unit for pressure?
mm Hg
mm Ag
torr
atm
6
The volumes of combined and produced gases in a chemical reaction occur in ratios of small whole numbers is the
Law of Multiple Proportions
Law of Definite Composition
Law of Combining Volumes
Law of Conservation of Mass
7
Who used the term "atom" first?
Aristotle
Dalton
Avogadro
Democritus
8
What does Ca = 40.1 g mean?
the mass of one mole of Ca atoms
the mass of several moles of Ca atoms
the mass of Ca atoms
the mass of one Ca atom
9
What does Ca = 40.1 amu mean?
the mass of one mole of Ca atoms
the mass of one Ca atom
the mass Ca atoms
the mass of several moles of Ca atoms
10
Which is not a diatomic molecule?
H2
C2
Cl2
I2
11
The volume occupied by one mole of any gas at STP is
molar volume.
molecular volume.
atomic volume.
volume
12
Which is not a value of standard pressure?
760. torr
1.01 atm
101.3 kPa
760. mm Hg
13
Matter cannot be created or destroyed, it can only change forms is the
Atomic Theory
Law of Multiple Proportions
Law of Conservation of Matter
Law of Conservation of Energy
14
The number 6.02 x 10
23
is
molar volume
Gay Lussac's number
Avogadro's number
Plato's number
15
Which is not part of Dalton's Atomic Theory?
Atoms are indivisible.
Chemical changes are the result of changes in combinations of atoms.
Atoms from the same element are different.
All matter is made up of atoms.
16
What does STP stand for?
standard temperature and plan
Standard temperature and pressure
some temperature and pressure
Standard tone and pressure
17
Who suggested that some elements exist naturally as diatomic molecules?
Avogadro
Democritus
Gay Lussac
Dalton
18
What is the unit for atomic mass?
atoms
grams
gram / mole
mole
