An ideal gas is at a temperature of 60
and a pressure of 1.50 atmospheres. What is the volume per particle of the gas?
a. 
b. 
c. 
d. 
e. 
b.
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Starburst galaxies
a. contain a large number of very young stars, but very little evidence of gas clouds. b. contain a large number of very old stars and almost no gas or dust. c. are often associated with a galaxy that is colliding with another galaxy. d. are common in rich clusters. e. are composed of filaments and voids.
Buoyancy: A rectangular wooden block measures 10.0 cm × 4.00 cm × 2.00 cm. When the block is placed in water, it floats horizontally, with its bottom face 1.65 cm below the surface. What is the density of the wood? The density of water is 1.00 g/cm3.
A. 0.825 g/cm3 B. 1.21 g/cm3 C. 1.65 g/cm3 D. 0.606 g/cm3 E. 0.350 g/cm3
Which of the following has NOT yet been observed in space?
A) formaldehyde B) methyl alcohol C) DNA D) ammonia E) hydrogen cyanide
What element is oxidized in the following equation and what element is reduced?
SN2 + 2 Ag ? Sn + 2 Ag? A) The tin ion, SN2 , is oxidized, while the silver, Ag, is reduced. B) The tin ion, SN2 , is reduced, while the silver, Ag, is oxidized. C) Both the tin ion, SN2 , and the silver, Ag, are reduced. D) Both the tin ion, SN2 , and the silver, Ag, are oxidized.