WorksheetsThe Mole
Total questions: 13
Worksheet time: 13mins
A sealed container of nitrogen gas contains 6.02 × 1023 molecules at STP. As the temperature increases, the mass of the nitrogen ___.
will increase
will remain the same
will decrease
cannot be determined
What is the total number of atoms in 1.00 mole of calcium?
1
6.02 × 1023
20
20(6.02 × 1023)
The atomic masses of any two elements contain the same number of ____.
atoms
grams
molecules
Liters
One mole of which substance contains a total of 6.02 × 1023 atoms?
NH3
O2
Li
CO2
Which mass contains 6.02 × 1023 atoms?
6.0 g of C
3.0 g of He
16.0 g of S
28.0 g of Si
Approximately how many atoms are there in 3.00 moles of aluminum?
6.02 × 1023
2(6.02 × 1023)
3(6.02 × 1023)
4(6.02 × 1023)
How many hydrogen atoms are in 5 molecules of isopropyl alcohol, C3H7O?
5 × (6.02 × 1023)
5
35
35 × (6.02 × 1023)
A compound has a molar mass of 56.0 g/mole. What is the molecular formula of this compound?
C2H4
C3H6
C4H8
CH2
What is true about the molar mass of chlorine gas (Cl2)?
The molar mass 17.0 g.
The molar mass is 35.5 g
The molar mass is equal to the mass of one mole of chlorine atoms.
None of the above.
What is the molar mass of aluminum sulfate, Al2(SO4)3?
123 g
150 g
214
342 g
What is the total mass of iron in 1.0 mole of iron (III) oxide?
72.0 g
112.0 g
160.0 g
56.0 g
What is the total number of moles of atoms represented by one mole of (NH4)2SO4?
11
14
10
15
Butanol is composed of carbon, hydrogen, and oxygen. If 1.0 mole of butanol contains 6.02 x 1024 atoms of hydrogen, what is the subscript for the hydrogen atom in CxHyOz?
1
10
6
8
