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Convert 1 atmosphere to pascals, given that it is 760 millimetres of mercury and mercury has a density of 13600 kilograms per cubic metre.

  • A.about 1010000 pascals
  • B.about 760 pascals
  • C.about 101000 pascals
  • D.about 10100 pascals

Answer: C

The pressure of a column is density times gravity times height, so thirteen thousand six hundred times nine point eight one times zero point seven six gives about one hundred and one thousand pascals. The chain of units cancels to pascals exactly.

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