CAS PY 93956

subject Type Homework Help
subject Pages 13
subject Words 1463
subject Authors Charles A. Higgins, James Shipman, Jerry D. Wilson

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page-pf1
1-Chlorobutane and 2-chlorobutane are
A) isomers.
B) the same compound.
C) neither isomers nor the same compound.
The symbol for tungsten is
A) W.
B) Ti.
C) Ag.
D) Tb.
The separation of white light into its component colors is called
A) polarization.
B) diffraction.
C) dispersion.
D) refraction.
page-pf2
The removal of an electron from an atom is called
A) binding affinity.
B) atomizing.
C) electron affinity.
D) ionization.
One parsec is equivalent in distance to how many light-years?
A) 3.26
B) 1.61
C) 1.00
D) 4.35
A system of 11 protons and 9 neutrons has a net charge of
A) 17.6 x 10-19 C.
B) "17.6 x 10-19 C.
page-pf3
C) 32.0 x 10-19 C.
D) 11.0 x 10-19 C.
E) "32.0 x 10-19 C.
A carbon dioxide molecule is
A) linear and polar.
B) angular and polar.
C) linear and nonpolar.
D) angular and nonpolar.
Which of the following is a technique used by astronomers in their search for other
planetary systems?
A) Observation of the star's rotation only
B) Observation of the Doppler shifts in the star's spectrum only
C) Both (A) and (B)
D) The search for alien signals
page-pf4
Which of the following is the era sometimes called the age of reptiles?
A) Mesozoic
B) Paleozoic
C) Cenozoic
D) Phanerozoic
Which of the following electromagnetic radiations has the greatest frequency?
A) Ultraviolet
B) Infrared
C) Radio
D) Visible
Compounds formed when the atoms involved share electrons are
page-pf5
A) electrovalent.
B) covalent.
C) ionic.
D) organic.
Earth's oceanic crust ranges in thickness from about
A) 98 to 140 km.
B) 5 to 11 km.
C) 19 to 98 km.
D) 18 to 26 km.
Which of the following is a unit of energy?
A) kilowatt-hour
B) newton
C) joules per second
D) newton-second
E) none of these
page-pf6
Calculate the de Broglie wavelength for an electron (m= 1 10-30 kg) moving at 3.3
106m/s.
A) 1.7 x 10"10m
B) 2.2 x 10"10m
C) 1.8 x 10"10m
D) 2.0 x 10"10m
The unit for current is the
A) ampere.
B) ohm.
C) coulomb.
D) volt.
page-pf7
Which of the following sources of energy presents the fewest pollution problems under
normal operating conditions?
A) Coal
B) Natural gas
C) Nuclear fission
D) Hydroelectric power
If the speed of an object in circular motion is increased by a factor of 5, its centripetal
acceleration for the same radius will be multiplied by a factor of
A) 0.04.
B) 0.2.
C) 2.24.
D) 25.
E) 5.
The heat index accounts for the "real feel" due to the effects of
A) temperature and perspiration.
B) temperature and pressure.
C) temperature and humidity.
page-pf8
D) humidity and pressure.
Which of the following has the lowest thermal conductivity?
A) Glass
B) Iron
C) Wood
D) Styrofoam
A stream of a certain liquid compound is attracted to an electrically charged rod. The
compound is probably
A) metallic.
B) nonpolar covalent.
C) ionic.
D) polar covalent.
page-pf9
Celestial latitude is called
A) declination.
B) right ascension.
C) the parsec value.
D) the zenith angle.
Most of the Rocky Mountains, in the western United States, lie in the ______________
Standard Time zone.
A) Mountain
B) Eastern
C) Central
D) Pacific
Which of the terrestrial planets has rings?
A) Mercury
B) Venus
C) Mars
D) None of the terrestrial planets has rings.
page-pfa
What is the name given to all matter, energy, and space?
A) Universe
B) Galaxy
C) Local group
D) Solar system
The percentage by mass of hydrogen in methane, CH4, is about
A) 25%.
B) 75%.
C) 80%.
D) 20%.
page-pfb
In organic molecules, a oxygen atom will normally form how many bonds?
A) 0
B) 1
C) 2
D) 3
E) 4
The ionic charge of the nitrite ion in Al(NO2)3, aluminum nitrite, must be
A) 3+.
B) 1".
C) 3".
D) 1+.
Consider a wire in a magnetic field, as shown in the following figure, with a current
flowing through it. What will happen to the wire?
page-pfc
A) The wire will be forced toward the north pole.
B) The wire will be forced perpendicular to the plane of the magnetic field.
C) The current will cease flowing.
D) Nothing will happen.
The metric prefix that means one tenth (1/10) is ...
A) deka
B) deci
C) centi
D) milli
E) none of these
The half-life of 3H is 12 years. About how long does it take for 63/64 of a sample of
that radionuclide to decay?
A) 6 years
B) 11.8 years
C) 12.2 years
D) 72 years
page-pfd
Which is a possible value for the principal quantum number n?
A) 3.14
B) 7
C) 2.5
D) None of these
Which is another name for quantum mechanics?
A) Classical mechanics
B) Wave mechanics
C) Optical mechanics
D) Spherical mechanics
When a hydrogen atom's electron goes from an energy state of n = 1 to n= 3,
A) the radius of the electron's orbit is unchanged.
B) the radius of the electron's orbit is increased.
C) the radius of the electron's orbit is decreased.
D) the radius of the electron's orbit is infinite.
page-pfe
An unbalanced force of 30 N is applied to a mass of 5.0 kg. What will be the resulting
acceleration?
______________ dating is used specifically to establish the absolute age of organic
remains.
Only four nuclides having an ______________ number of protons and an
______________ number of neutrons are stable.
page-pff
Geologists define a(n) ______________ as any flow of water occurring between
well-defined banks.
A star of magnitude 3 is how many times brighter than a star of magnitude 5?
A quantity of ideal gas in a rigid container has a pressure of 1.00 x 106Pa at 0°C. If the
pressure is increased to 1.75 x 106 Pa, what is the temperature of the gas after this is
done?
When a wave is ______________, the angle of reflection equals the angle of incidence.
page-pf10
Tell why each nuclide shown is unstable. Explain your reasoning in each case.
Complete and balance the equation: Ba(NO3)2(aq) + K2CO3(aq)

For an atom of 12Mg, the number of shells containing electrons is ______________.
page-pf11
A plane mirror stands vertically on a table. A ruler lies on the table in such a position as
to make an angle of 30 with the mirror. Determine the angle between the ruler and its
image.
As comets approach and move around the Sun, the coma and the tail ______________
in size.
Our present days of the week are related to the names of the Sun, the Moon, and
______________ planets.
page-pf12
For the multiplication of 8.704 m 3.14 m, the result should be reported with
______________ significant figures.
Strike-slip faulting takes place along the ______________ boundary of two plates.
In a given period, the element of Group ______________ has the lowest ionization
energy.
A(n) ______________ is a material whose basic molecule has no duplicate in nature.

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