Gradients usually decrease downstream in a major river system
Indicate whether the statement is true or false
TRUE
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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. Their boiling points are the same, but kerosene has the greater density. B. Gasoline has the higher boiling point. C. 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. D. Kerosene has the higher boiling point.
The units used to measure electrical resistance are called
A) volts. B) AC. C) ohms. D) watts.
An ideal shelter for housing a temperature-measurement instrument should be white and in the
shade. Indicate whether the statement is true or false.
What is salinity, and how is it usually expressed? What is the average salinity of the ocean?
What will be an ideal response?