A gas occupies 100.0 mL at a pressure of 780 mm Hg. What is the volume of the gas when its pressure is increased to 880 mm Hg?

This question has been set by someone who has never used a mercury manometerwe gets  

V 2 = 87.6 ⋅ m L

Explanation:

One atmosphere of pressure will support a column of mercury that is  

760 ⋅ m m

high. A manometer is thus a highly visual measure of the strength of a vacuum, or as a measure of atmospheric pressure.

If you put the column under a pressure greater than  

1 ⋅ a t m

you are likely to get mercury all over the laboratory, where it will inhabit every crack and every cranny. This is a MAJOR cleanup job, which contract cleaners would not touch.

And so  P 1

=

780 mm Hg

the answer is:  

line graphs show patterns in data with variables that change over time; whereas, circle graphs show data as parts out of a whole (such as out of 100%).

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