A pressure of 153 kPa is how many atmospheres (atm)? Be sure to report your answer to three significant figures.
We know 1atm = 101325 Pa
1kPa = 1000Pa
Therefore, 1atm = 101.325kPa
Now,
101.325 kPa
1 atm
153.000 kPa
? atm
By cross multiplication,
153*1/101.325 = 1.509 = 1.51atm
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