Answered: 4. Name of the compound FeO: a) Iron…

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4. Name of the compound FeO: a) Iron (II) oxide b) Iron (I) oxide c) Iron (IV) oxide d) Iron oxide

Introductory Chemistry: An Active Learning Approach

6th Edition

ISBN:9781305079250

Author:Mark S. Cracolice, Ed Peters

Publisher:Mark S. Cracolice, Ed Peters

Chapter11: Atomic Theory :the Quantum Model Of The Atom

Section: Chapter Questions

Problem 92E: Determine whether each statement that follows is true or false: a Electron energies are quantized in...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

1. Which statement about the electrons is True?
a) Electrons are negatively charged
b) Electrons are found in the nucleus of the atom
c) Electrons have much more mass than any atom
d) All atoms have electrons as part of their structure
2. On a summer day, the temperature may exceed 100°F. Correctly find his temperature in Celsius.
a) 122°C.
b) 8.0°C
c) 38°C
d) 56°C
3. Which of the following statements about subatomic particles is FALSE?
a) A neutral atom contains the same number of protons and electrons.
b) Protons have about the amount of charge as electrons but with opposite sign.
c) Electrons make up most of the mass of an atom.
d) Protons and neutrons are located in the nucleus of the atom.
4. Name of the compound FeO:
a) Iron (II) oxide
b) Iron (I) oxide
c) Iron (IV) oxide
d) Iron oxide
5. Which of the following measurements contains 2 significant figures?
a) 1.002 cm
b) 3.20 x 10 atoms
c) 4100 mg
d) 0.780

6. List the elements in the compound CF2CI2 in order of increasing (smallest to largest) mass
percent composition
a) C>F> Cl
b) F> Cl > C
c) Cl > C > F
d) Cl > F > C
7. An element containing 12 protons, 12 electrons and 26 neutrons will have the symbol:
a) 26FE
26M8
b)
38MB
c)
38Fe
d)
8. What is the volume in liters (1) of 325 kg of jet fuel whose density is 0.671 g/mL?
a) 4.84 x 102
b) 4. 84 x 105
c) 218.1
d) Data are not enough to calculate volume
9. What is the proper answer and number of significant figures for the following calculation: (28.914 -
19.3) x 8.152?
a) 78.37
b) 80
c) 78.4
d) 78
10. How many electrons are in S2- ion?
a) 12
b) 10
c) 18
d) 11

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