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Tanya [424]
2 years ago
11

Which of the following correctly describes what happens to the kinetic energy of water when it changes from steam to a liquid? T

he kinetic energy of the molecules increases. The kinetic energy of the molecules decreases. The kinetic energy of the molecules increases then decreases. There is no change in the kinetic energy of the molecules
Chemistry
1 answer:
Kazeer [188]2 years ago
5 0
When liquid water turns to steam the molecules move (faster or slower) and heat is (added or removed) from the water. ... The molecules in the steam have (more or less) Kinetic Energy. When liquid water turns to steam the molecules move (faster or slower) and heat is (added or removed) from the water.
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ILL GIVE YOU BRAINLIEST <3
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Should be a 15 imo

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3 years ago
The volume of a bubble that starts at the bottom of a lake at 4.55°C increases by a factor of 8.00 as it rises to the surface wh
Masja [62]

Answer:

The depth of the lake is 67.164 meters.

Explanation:

The combined gas equation is,

\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}

where,

P_1 = initial pressure of gas in bubble= ?

P_2 = final pressure of gas = 0.980 atm

V_1 = initial volume of gas = V

V_2 = final volume of gas = 8.00 × V

T_1 = initial temperature of gas = 4.55^oC=273.15+4.55=277.7 K

T_2 = final temperature of gas = 18.05^oC=273.15+18.05=291.2 K

Now put all the given values in the above equation, we get:

\frac{P_1\times V}{277.7 K}=\frac{0.980 atm\times 8.00\times V}{291.2 K}

P_1=7.476 atm

pressure of the gas in bubble initially is equal to the sum of final pressure and pressure exerted by water at depth h.

P_1=P_2+h\rho\times g

Where :

\rho = density of water = 1.00 g /cm^3=1000 g/m^3

g = acceleration due gravity = 9.8 m/s^2

7.476 atm=0.980 atm +h\rho\times g

6.496 atm=h\rho\times g

6.496 \times 101325 Pa=h\1000 g/m^3\times 9.8 m/s^2

h = 67.164 m

The depth of the lake is 67.164 meters.

4 0
3 years ago
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