Is this equation violating the law of conservation of mass? Explain why. 3 H2SO4 + 2 Fe(OH)3 -->Fe2(SO4)3 + 4 H2O

Group of answer choices
Yes; There is an equal amount of each type of element
No; There is an equal amount of each type of element
Yes; H is being destroyed when the products formed
No; H is being destroyed when the products formed

Answer is in the photo. I couldn't attach it here, but uploaded it to a file hosting. link below! Good Luck!

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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

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