9. A manometer is attached to an enclosed gas sample, as shown above (Figure 13.

Question

9. A manometer is attached to an enclosed gas sample, as shown above (Figure 13.4). The mercury rises 20 mm 10. A sample of neon gas is at -25°C. What would be its Celsius temperature when the average kinetic energy of 11. The density of water is approximately 1/14th that of mercury. If the atmospheric pressure at a certain location higher on the side of the U-tube that is open to the air. The atmospheric pressure is 752 mmHg. What is the pressure of the gas sample in the bulb? the particles is tripled? is 750. mmHg, to what height (in m) would a column of water rise?

Explanation / Answer

There is no diagram given for question 9, hence solving Q10 and Q11 as per Chegg guidelines

Q10)

Initial Tempertuare, T1 = -25C = -25 + 273 = 248K

Average Kinetic Energy = 3/2 KT, which is directly proportional to T

Let the Kintetic energy initially be KE

Now the new kinetic energy must be 3KE

T2 = 3T1 = 3 * 248K = 744K = (744-273)C = 471C

Hence the temperature must be raised to 471C

Q11)

Pressure = Rho(density) * g * Height

Since g will be constant for both mercury and water so we can write

density(mercury) * height(mercury) = density(water) * height(water)

14 * 760 mm = height of water

height of water column = 10640 mm or 10.46m

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