Boyle's Law states that when a sample of gas is compressed at a constant temperature, the pressure P and volume V satisfy the equation PV = C, where C is a constant. Suppose that at a certain instant the volume is 900 cm3, the pressure is 200 kPa, and the pressure is increasing at a rate of 20 kPa/min. At what rate is the volume decreasing at this instant?

-90cm³/min

Explanation:

The equation is:

 (1)

Where P: is the pressure, V: is the volume, and C: is a constant.

To find the rate at which the volume decrease, we need to derivate equation (1):

  (2)

From equation (2) we have:

P = 200 kPa

V = 900 cm³

Hence, by entering the values above in equation (2), we have:

Therefore, the rate at which the volume is decreasing is -90cm³/min.

I hope it helps you!        

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.

inverse v=i*r

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