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CHM 101
GCU CHM 101/ CHM101| Exam 4 | Introduction to
General, Organic, & Biochemistry | Questions &
Answers| Grade A| (2025/ 2026 NEW)
Which is not a benefit associated with nuclear power plants? -
ANS ✓Inexpensive to operate
Which naturally occurring radioactive particles are the largest? -
ANS ✓Alpha particles
Semiconductors, such as the element silicon, may be used in cells
that convert solar radiation to electricity. One of the major
difficulties encountered in using silicon is that it - ANS ✓is
expensive to produce large quantities of extremely pure silicon.
As of 2007, what is the maximum efficiency of a multijunction
solar cell? - ANS ✓40 percent
Which naturally occurring radioactive particles are negatively
charged? - ANS ✓Beta particles
Which is the balanced equation for the fission of U-235? - ANS
✓235 (92) U + 1(0)n = 87(35) Br + 146 ( 57) La+ 3 1 (0) n
Rank the forms of nuclear radiation from highest to lowest mass?
- ANS ✓Alphas, Beta, Gamma
Which is not true of radioactive half-life? Radio-active half-life is -
ANS ✓Increased by heating the isotope
CHM 101
, 2
CHM 101
Which naturally occurring radioactive particles are the size of a
helium nucleus? - ANS ✓Alpha particles
A coal-burning power plant generates 6.0 x 10^16 J per year. If
the combustion of coal yields 29 kJ/g, how many grams of coal
was burned each year? - ANS ✓2.1 x 10^12 g
Assume that coal can be represented by the chemical formula
C135H96O9NS. If 15.0 tons of coal is burned, what mass of sulfur
is formed in the SO2 produced by this process? - ANS ✓0.252 tons
John ate a whole pizza which has 2,368 Cal. If he burns 125 Cal by
walking for 30 minutes, how long would it take to burn off the
entire pizza by walking? - ANS ✓9 hours and 28 minutes
The heat of combustion of butane (C4H10) is 91.4 kJ/g. How
much heat is produced is 7.0 moles of butane undergoes complete
combustion? - ANS ✓3.7 x 10^4 kJ
The heat of combustion for n-heptane is 4,187 kJ/mol. How much
heat is produced if 200kg of n-heptane (c7h16) is completely
combusted? - ANS ✓8.36 x 10^6 kJ
A hot dog has a nutritional value of 290 cal. How many 20 kg
dumbbells could be lifted 1 m off the floor with the amount of
energy obtained from metabolizing one hot dog? ( note 200 J of
energy to lift a 20 kg dumbbell 1m of the floor; 1 Cal=1000 cal: 1
cal=4.1841 J - ANS ✓6067
Which one of the following hydrocarbons would have the highest
boiling point? - ANS ✓C (the one with the most carbons)
The first law of thermodynamics states that - ANS ✓Energy is
neither created nor destroyed
CHM 101
CHM 101
GCU CHM 101/ CHM101| Exam 4 | Introduction to
General, Organic, & Biochemistry | Questions &
Answers| Grade A| (2025/ 2026 NEW)
Which is not a benefit associated with nuclear power plants? -
ANS ✓Inexpensive to operate
Which naturally occurring radioactive particles are the largest? -
ANS ✓Alpha particles
Semiconductors, such as the element silicon, may be used in cells
that convert solar radiation to electricity. One of the major
difficulties encountered in using silicon is that it - ANS ✓is
expensive to produce large quantities of extremely pure silicon.
As of 2007, what is the maximum efficiency of a multijunction
solar cell? - ANS ✓40 percent
Which naturally occurring radioactive particles are negatively
charged? - ANS ✓Beta particles
Which is the balanced equation for the fission of U-235? - ANS
✓235 (92) U + 1(0)n = 87(35) Br + 146 ( 57) La+ 3 1 (0) n
Rank the forms of nuclear radiation from highest to lowest mass?
- ANS ✓Alphas, Beta, Gamma
Which is not true of radioactive half-life? Radio-active half-life is -
ANS ✓Increased by heating the isotope
CHM 101
, 2
CHM 101
Which naturally occurring radioactive particles are the size of a
helium nucleus? - ANS ✓Alpha particles
A coal-burning power plant generates 6.0 x 10^16 J per year. If
the combustion of coal yields 29 kJ/g, how many grams of coal
was burned each year? - ANS ✓2.1 x 10^12 g
Assume that coal can be represented by the chemical formula
C135H96O9NS. If 15.0 tons of coal is burned, what mass of sulfur
is formed in the SO2 produced by this process? - ANS ✓0.252 tons
John ate a whole pizza which has 2,368 Cal. If he burns 125 Cal by
walking for 30 minutes, how long would it take to burn off the
entire pizza by walking? - ANS ✓9 hours and 28 minutes
The heat of combustion of butane (C4H10) is 91.4 kJ/g. How
much heat is produced is 7.0 moles of butane undergoes complete
combustion? - ANS ✓3.7 x 10^4 kJ
The heat of combustion for n-heptane is 4,187 kJ/mol. How much
heat is produced if 200kg of n-heptane (c7h16) is completely
combusted? - ANS ✓8.36 x 10^6 kJ
A hot dog has a nutritional value of 290 cal. How many 20 kg
dumbbells could be lifted 1 m off the floor with the amount of
energy obtained from metabolizing one hot dog? ( note 200 J of
energy to lift a 20 kg dumbbell 1m of the floor; 1 Cal=1000 cal: 1
cal=4.1841 J - ANS ✓6067
Which one of the following hydrocarbons would have the highest
boiling point? - ANS ✓C (the one with the most carbons)
The first law of thermodynamics states that - ANS ✓Energy is
neither created nor destroyed
CHM 101
