HELL PLEAAASSS FAST You have the following interaction:
2CH3OH + 3O2 ==> 2CO2 + 4H2O
1)Calculate the heat of reaction (Dh ).
2)Write a thermochemical equation to report this reaction
3)What is the mass of water produced by the reaction of 4000 liters of oxygen?
4)The amount of energy associated with the combustion of 15 kg of ethanol

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

what is the question here. i think you messed up.