A gas originally occupies a volume of 0.5 m3 at a pressure of 100 kPa. It is slowly allowed to expand until the volume is 2.5 m3. Assuming the temperature is kept constant, the final pressure will be
A. 10 kPa.
B. 50 kPa.
C. 500 kPa.
D. 100 kPa.
E. 20 kPa.
Answer: E
You might also like to view...
Thermal Expansion: A quantity of mercury occupies 400.0 cm3 at 0°C. What volume will it occupy when heated to 50°C? Mercury has a volume expansion coefficient of 180 × 10-6 K-1.
A. 450 cm3 B. 409.7 cm3 C. 403.6 cm3 D. 401.8 cm3
Ideal Gas Law: How many molecules are in (a) 1.0 cm3 of air at STP and (b) 1.0 cm3 of helium at STP? (R = 8.31 J/mol . K, NA = 6.022 × 1023 molecules/mol)
What will be an ideal response?
Why are stars no longer forming in the galactic halo?
A) Frequent supernovae blew all the halo gas out into intergalactic space. B) There was never star formation in the halo; its stars were ejected from the disk. C) Only low-mass stars formed in the halo, so there were no stellar winds or supernovae to recycle gas. D) The cold molecular gas required for star formation is in the galactic disk.
Why do we call dark matter "dark"?
A) It blocks out the light of stars in a galaxy. B) It emits no radiation that we have been able to detect. C) It contains large amounts of dark-colored dust. D) It is dark brown or dark red in color.