In a fractionating tower, the crude oil vapors pass from a pipe still into the column. Tar and lubricating stock are the first components to be pulled off at the bottom
Nearer the top kerosene is pulled off followed by gasoline and finally natural gas at the very top. From this information, which has a higher boiling point, gasoline or kerosine? A) Gasoline has the higher boiling point.
B) Kerosene has the higher boiling point.
C) Their boiling points are the same, but kerosene has the greater density.
D) Fractional distillation components are pulled off based on molecular weight, so it is not possible to know which has the higher boiling point from the information given.
B
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A. a few kilometers per day B. a few kilometers per hour C. a few meters per day D. a few centimeters per day
If an object has no acceleration of any kind, then we can say for certain that it is
A. moving at constant nonzero velocity. B. at rest. C. in mechanical equilibrium. D. all of the above
The two most familiar and widely used metamorphic rocks are marble and slate
Indicate whether the statement is true or false
The place where an air mass originates is known as the ________
Fill in the blank(s) with correct word