Oxygen, Image, is certainly good for you. Does it follow that if small amounts of oxygen are good for you then large amounts of oxygen would be especially good for you?
A) Yes. This is the reason patients are given pure (100%) oxygen during medical procedures.
B) Yes. Increased oxygenation of the bloodstream is good for you and can increase your life span.
C) No. Breathing 100% oxygen for extended periods of time can be damaging to the body.
D) No. Large amounts of oxygen will absorb hydrogen from the body and increase the amount of water in the body causing an imbalance in electrolytes.
Answer: C
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What is the binding energy of 
Ra? (1 u = 931.5 MeV/c2)
A. 1700 MeV B. 1900 MeV C. 2100 MeV D. 2300 MeV E. 2500 MeV
A ball is subjected to a pressure of 2.0 atmospheres. The un-squeezed diameter of the ball is 10.0 cm. The squeezed diameter of the ball is 9.999 cm. The bulk strain on the ball is
a. 
b. 
c. 
d. 
e. 
A cyclotron operates at 10 MHz. What magnetic field is needed to accelerate protons?
A) 0.12 T B) 0.25 T C) 0.66 T D) 1.3 T E) 1.5 T
What reaction would be taking place if you were charging the battery?
In a battery, if the following oxidation-reduction reactions takes place normally: Mn2O3 + ZnO ? 2 MnO2 + Zn A) 2 MnO2 + Zn ? Mn2O3 + ZnO B) ZnO ? Zn C) Mn2O3 ? MnO2 D) all of the above E) none of the above