1pts steel wool wetted with vinegar is stuffed into a narrow mouth round glass bottle. a rubber balloon is then sealed over the mouth of the bottle. after several hours, the balloon inflates into the bottle in an inverted manner. what happened

Here's what I find  

Explanation:

The aqueous acid causes the iron to react with the oxygen in the air.

The reaction is probably

2Fe + O₂ + 4H⁺ ⟶ 2Fe²⁺ + 2H₂O

The removal of oxygen causes the pressure inside the bottle to decrease.

The greater outside pressure causes the balloon to inflate into the bottle in an inverted manner.  

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