The measured pressure in a gas-filled cylinder is equivalent to which of the following?
a. Its filling density divided by the cylinder gas factor.
b. Gas temperature times its coefficient of expansion.
c. Gas density divided by the density of air at standard temperature, standard pres-sure, dry (STPD).
d. The force required to compress its volume within the cylinder.
ANS: D
In a gas-filled cylinder, the pressure represents the force required to compress the gas into its smaller volume.
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Fill in the blank(s) with the appropriate word(s).
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