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Duplicate of Duplicate of Duplicate of Duplicate of The Mole, Empirical and Molecular Formula Flashcards | StudBud
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Duplicate of Duplicate of Duplicate of Duplicate of The Mole, Empirical and Molecular Formula
Duplicate of Duplicate of Duplicate of Duplicate of The Mole, Empirical and Molecular Formula
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#themole #empiricalformula #molecularformula
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1
What is the mass of 0.500 moles of HF?
10 g
18 g
18.2
20.01 g
2
What is the empirical formula of C
8
H
18
O
2
?
C2H4O
C8H18O
C4H9
C4H9O
3
The simplest ratio of atoms represented in a molecule is called_______.
Empirical Formula
Avagadro's Formula
Molecular Formula
Avacado's Formula
4
What is the formula for calcium chlorate?
CaClO
CaClO3
Ca(ClO3)2
CaClO2
5
How many moles do you have if you have 2.33x10
23
molecules KCl?
0.873 moles of KCl
0.387 molecules of KCL
0.387moles of KCl
140e47moles
6
What is the molar mass of water?
all of these
18.02 g/mol
18 g/mol
18.0 g/mol
7
What is the percent composition of Oxygen in water?
1.125%
0.889%
112.5%
88.9%
8
The mole is also known as _____.
Avagadro's number
6.02e22
6.02x1022
6.02x1024
9
If the EF is CH
2
O and the molar mass is 180 g/mol. What is the Molecular Formula?
C6H12O6
C2H4O2
C3H6O3
CH2O
10
What is the percent composition of oxygen in aluminum oxide?
5.09%
47.08%
32.03%
70.35%
11
What is the empirical formula of C
6
H
12
O
6
?
C6H12O6
C3H4O3
C2H4O2
CH2O
12
What is the molar mass of calcium phosphate?
135.24 g/mol
262.24 g/mol
215.24 g/mol
310.24 g/mol
13
Which is more a mole of carbon atoms or a mole of sodium atoms?
sodium
Carbon
same
14
Which has more mass, a mole of carbon atoms or a mole of sodium atoms?
They are the same
carbon
sodium
15
What kind of particle is Ca
2+
?
an ion
a molecule
an atom
a polyatomic ion
16
Which of the following is expressed in g/mol?
formula unit
Molar mass
a measured mass
chemical formula
17
Which of the following is not considered a particle in chemistry?
ions
elements
moles
molecules
18
What is the molar mass of calcium hydroxide?
100.46 g/mol
58.10 g/mol
74.10 g/mol
57.10 g/mol
19
The molecular formula is ______.
the actual formula
the lowest ratio of atoms
a made up formula
A bad we shouldn't use in chemistry
20
The empirical formula of a compound with: 40.00%C 6.72% H 53.28%O.
C2H4O2
CHO
C2HO2
CH2O
