In thermodynamics, the standard pressure is 100 kPa. What is this value in units of atmospheres.

I got 9.86x10^-7 atm but the book said .9869 atm. who's right?

100/101.325 = ??

why is it 101.325?

Oh never mind. I found my mistake. I multiplied by 1000 instead of dividing.

To convert the standard pressure from kilopascals (kPa) to atmospheres (atm), you need to use the conversion factor of 1 atm = 101.325 kPa.

To find the answer, you can use the following formula:

Pressure in atm = Pressure in kPa / 101.325

Let's calculate the conversion:

Pressure in atm = 100 kPa / 101.325
≈ 0.986923 atm

Therefore, the correct value for the standard pressure of 100 kPa in units of atmospheres is approximately 0.9869 atm.

Based on the calculations, it seems that the book is correct with a value of 0.9869 atm, rather than the value of 9.86x10^-7 atm that you calculated.