About how much CO2 comes out of the stack of a coal-burning plant that consumes one ton of coal?
A) Much less than one ton.
B) Anywhere from 1 ton to about 10 tons, depending on the design of the plant.
C) About 3 tons.
D) None, because the CO2 is precipitated as a solid.
E) About 1 ton.
C
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Distance is a(n) ______________ quantity
Fill in the blank(s) with correct word
A cup of water is filled to the brim when an ice cube is placed in it. The tip of the ice cube sticks out of the surface. As the ice melts, you observe that
A) the cup overflows. B) the cup might overflow but it depends on the actual mass of the ice cube. C) the water level remains the same. D) the water level actually goes down. E) There is not enough information to answer this question.
The density of the Sun is most similar to which object?
A) Halley's Comet's nucleus B) the Earth C) Mercury D) the Moon E) Jupiter
What was the significance of the end of the era of nucleosynthesis, when the universe was about 5 minutes old?
A) It marks the time at which the expansion of the universe had settled down to its current rate. B) The basic chemical composition of the universe had been determined. C) It marks the time at which the first stars formed. D) The proportions of dark matter and luminous matter had been determined.