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Atmospheric pressure yesterday was given as 0.875 atm. Express this pressure in units of torr and also in kilopascals (kPa), respectively.

A665 torr and 8.87 × 104 kPa
B665 torr and 88.7 kPa
C1.32 × 10−3 torr and 9.87 × 10−3 kPa
D869 torr and 88.7 kPa

Verified Answer :

MissPhiladelphia

This problem is about conversion and dimensional analysis. Important information to know:
 1 atm = 760 torr = 101.325 kPa

For atm to torr conversion:

0.875 atm (760 torr / 1 atm) = 665 torr

For atm to kPa conversion:

0.875 atm (101.325 kPa / atm) = 88.7 kPa

Thus the answer is b) 665 torr and 88.7 kPa

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