A pressure of 3.00 × 10^?7 mm of Hg is achieved in a vacuum system. How many gas molecules are present per liter volume if the temperature is 298 K? (760 mm of Hg = 1 atm, R = 0.082 1 L/atm/mol/K, and NA = 6.02 × 10^23)
a. 6.5E+10
b. 8.6E+16
c. 9.7E+12
d. 1.8E+9
e. 5.7E+14
c
You might also like to view...
Capacitors in Combination: A 1.0-µF capacitor and a 2.0-µF capacitor are connected together, and then that combination is connected across a 3.0-V potential source (a battery). What is the potential difference across the 2.0-µF capacitor if the capacitors are connected (a) in series or (b) in parallel?
Fill in the blank(s) with the appropriate word(s).
What is the MOST important role that nucleic acids play in living organisms on Earth?
A) long-term energy storage and cell structure B) basic functioning of living organisms C) the storage and transfer of information D) short-term energy storage
Lisa Ann is nearsighted with a near point of 75. cm
(a) What FOCAL LENGTH is this? (b) What POWER lens is needed to correct her nearsightedness (assuming distance from lens to eye is negligible)?
True or False: A photon is reflected from a mirror. Although the photon has energy, it can't transfer any energy to the surface because it has zero mass
1.True 2.False