Pentane reacts with oxygen in a combustion reaction to produce carbon dioxide and water. C5H12 + O2 -> CO2 + H2O If you have 5.00 moles of pentane, how many moles of water will be produced?

30 moles of H2O

Explanation:

First we write the balanced equation for the combustion reaction of 1 mol of Pentane.

C5H12 + 8O2 >  5CO2 +  6H2O

From the balanced equation of the reaction;

1 mole of Pentane (C5H12) produces  6moles of water.

∴ 5 moles of Pentane would have an equation like this when you multipy all the coefficients by 5

 5 C5H12  + 40 O2 > 25 CO2  + 30 H2O, which means; 5 moles of pentane would produce 30 moles of water.

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

it is a good conductor

explanation: