The vapor pressure of liquid methyl acetate, CH3COOCH3, is 100. mm Hg at 282 K. A sample of CH3COOCH3 is placed in a closed, evacuated 554 mL container at a temperature of 282 K. It is found that all of the CH3COOCH3 is in the vapor phase and that the pressure is 50.0 mm Hg. If the volume of the container is reduced to 309 mL at constant temperature, which of the following statements are correct? a. Some of the vapor initially present will condense.
b. No condensation will occur Liquid methyl acetate will be present.
c. Only methyl acetate vapor will be present.
d. The pressure in the container will be 100. mm Hg.

first let us lay out the formula for potential

and kinetic energy:

pe = mgh

ke = (mv^2)/2

where: m=mass, v=velocity, g=gravitational

acceleration, h=height

calculating for mass using the known values of

pe:

340j = m (9.81 m/s^2) (50ft) (1m/3.28ft)

m = 2.27 kg

the law of conservation of energy states that

energy is neither created nor destroyed. therefore, the change in kinetic

energy from 50 ft to 35 ft would be equal to the change in potential energy

from 50 ft to 35 ft. however it would be opposite in signs since one is losing

while other is gaining.

ke(35ft) – ke(50ft) = - [ pe(35ft) – pe(50ft]

ke(50ft) = 0 since the brick is initially at rest

ke(35ft) = 340j - 2.27kg (9.81 m/s^2) (35ft)

(1m/3.28 ft)

ke(35ft)

= 102.38 j

i believe it is-

d.) gravity pulled particles of dust and gas together to form planets.

the answer is barium and copper bromide

answer: i dont know the answer but this might

explanation:

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