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# How do you change 1656 kPa to atm?

16.35 atm

First, you need to know the conversion factor between the two units In this case, it is ##101.3kPa=1atm##

This can be written in fraction form as ##(101.3kPa)/(1atm)## or ##(1atm)/(101.3kPa)##

To set up a factor-label problem, the easiest way to change between units, first, put down your original data over 1 ##(1656kPa)/1##

Then, use one of the fraction conversion factors so that the kPa cancels (it is on the top and bottom) and you are just left with atm ##(1656kPa)/1*(1atm)/(101.3kPa)##

In this case, ##(1656cancel(kPa))/1*(1atm)/(101.3cancel(kPa))## and you are left with atm

Divide out to get your final answer of 16.35atm The answer is to 4 because 1656kPa has 4 significant figures, the least in the problem.