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vfiekz [6]
3 years ago
15

How is fractional distillation of crude oil related to stoichiometry

Chemistry
1 answer:
lora16 [44]3 years ago
8 0

Answer:

Fractional distillation is the process by which oil refineries separate crude oil into different, more useful hydrocarbon products based on their relative molecular weights in a distillation tower.

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PLEASE HELP!!!
trasher [3.6K]

Answer:

(a) oxygen

(b) 154g (to 3sf)

(c) 79.9% (to 3sf)

Explanation:

mass (g) = moles × Mr/Ar

note: eqn means chemical equation

(a)

moles of P = 84.1 ÷ 30.973 = 2.7152 moles

moles of O2 = 85÷2(16) = 2.65625 moles

Assuming all the moles of P is used up,

moles of O2 / moles of phosphorus = 5/4 (according to balanced chemical eqn)

moles of O2 required = 5/4 × 2.7152moles = 3.394 moles (more than supplied which is 2.65625moles)

therefore there is insufficient moles of O2 and the limiting reactant is oxygen.

(b)

moles of P2O5 produced

= 2/5 (according to eqn) × 2.7152

= 1.08608moles

mass of P2O5 produced

= 1.08608 × [ 2(30.973) + 5(16) ]

= 154.164g

= approx. 154g to 3 sig. fig.

(c)

% yield = actual/theoretical yield × 100%

= 123/154 × 100%

= 79.870%

= approx. 79.9% (to 3sf)

4 0
2 years ago
Jamal lives in a place where it is hot in the summer and cold in winter. His family decided to improve the insulation in their h
Maksim231197 [3]
It would decrease because they will be using less of their AC now that they've improved insulation.
3 0
3 years ago
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A piece of work can be finished in 30 days 8 hours a day. In how many Days the work would have been finished working 6 hours a d
goblinko [34]

Answer:

If 8 hours= 30 days

then 6 hours= 8×30÷6

                    = 40 days

Explanation:

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If a plant cell is placed in a solution and the cell shrivels up, what type of solution was it placed in? How do you know?
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Answer:

The cell is in a Hypotonic solution. When a cell is in a Hypotonic solution the lower osmotic pressure causing water to move across the pressure gradient into the solution causing the cell to shrivel.

5 0
2 years ago
Every chlorine atom has(1) 7 electrons (2) 17 neutrons(3) a mass number of 35 (4) an atomic number of 17
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(4) an atomic number of 17
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