Transcript The Mole - Education and Learning

Higher Chemistry
Unit 1
Section 5 The Mole
Multiple Choice Questions
This is designed to be used by teachers to help students develop
skills in answering multiple choice questions.
Douglas Racey, Waid Academy, Anstruther, Fife, Scotland
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
1. The number of moles of ions in 1 mol of
copper(II)phosphate is
A.
B.
C.
D.
1
2
4
5
Answer
D.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
2. The Avogadro Constant is the same as the
number of
A.
B.
C.
D.
atoms in 24 g of carbon
molecules in 16g of oxygen
molecules in 2g of hydrogen
ions in 1 litre of sodium chloride
solution, concentration 1 moll-1
Answer
C.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
3. What volume of oxygen, in litres, is required
for the complete combustion of 1 litre of
butane gas? (All volumes are measured
under the same conditions of temperature
and pressure)
A.
1
B.
4
C.
6.5
D.
13
Answer
C.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
4. Which of the following contains the largest
number of molecules?
A.
B.
C.
D.
0.10g of
0.17g of
0.32g of
0.35g of
Answer
hydrogen gas
ammonia gas
methane gas
chlorine gas
A.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
5. It is now known that protons and neutrons are
made up of smaller particles called quarks. Each
proton and each neutron contains 3 quarks.
What is the approximate number of quarks in 1g
of carbon-12?
A.
6 x 1023
B.
9 x 1023
C.
1.8 x 1024
D.
2.16 x 1025
Answer
A
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
6. How many atoms will be present in 11.2 litres
of gaseous fluorine (molar volume 22.4 litres
mol-1)
A.
B.
C.
D.
1.505 x 1023
3.01 x 1023
6.02 x 1023
1.204 x 1024
Answer
C.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
7. A new form of carbon has been discovered. It
consists of a football-shaped molecule
consisting of 60 carbon atoms. Approximately
how many such molecules are present in 12g of
this type of carbon?
A.
1.0 x 1022
B.
1.2 x 1023
C.
6.0 x 1023
D.
3.6 x 1023
Answer
A.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
8. The mass of 1 mol of sodium is 23g. What is
the approximate mass of 1 sodium atom?
A.
B.
C.
D.
6.0 x 1023 g
6.0 x 10 -23 g
3.8 x 10 -23 g
3.8 x 10 -24 g
Answer
C.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
9. A metal (melting point 843oC, density 1.54 g/cm3) was
obtained by electrolysis of its chloride (melting point
772oC, density 2.15 g/cm3). During the electrolysis the
metal would occur as
A.
B.
C.
D.
a solid on the surface of the electrolyte
a liquid on the surface of the electrolyte
a solid at the bottom of the electrolyte
a liquid at the bottom of the electrolyte
Answer
A.
Higher Chemistry
Unit 2 - Section 5 The Mole
Multiple Choice Questions
10. A one carat diamond used in a ring contained
approximately 1 x 1022 carbon atoms. What is
the mass of the diamond?
A.
B.
C.
D.
0.1 g
0.2 g
1.0 g
1.2 g
Answer
B.