All categories

3 years ago

What's the difference between cracking and pyrolysis?

2 answers:

5 0

The difference between Cracking and Pyrolysis in the former is the process of whereby complex organic molecules such as kerogen or long chain hydrocarbon are broken into a simpler molecule while the later is a thermochemical decomposition of organic material at elevated temperature in the absence of oxygen.

boyakko [2]3 years ago

5 0

The difference between cracking and pyrolysis is that cracking is the breakdown of large organic compounds by use of a catalyst and low temperatures to form fewer different compounds. In Pyrolysis, it's the decomposition of a compound on heating in absence of air.

You might be interested in

Aquien le elimina las respuestas

mr Goodwill [35]

No se :/, a ti si te paso??

5 0

3 years ago

A container with an initial volume of 1.0L is occupied by a gas at a pressure of 150kPa at 25'C. By changing the volume, the pre

Archy [21]

Answer:

Final Volume = 0.31L

Explanation:

Initial volume V1 = 1L

Initial pressure P1 = 150kPa

Initial temperature, T1 = 25'C + 273 = 298K

Final Pressure P2 = 600kPa

Final Temperature T2 = 100'C + 273 = 373K

Final Volume V2 = ?

The combined gas law is given as;

P1V1 / T1 = V2P2 / T2

150 * 1 / 298 = V2 * 600 / 373

V2 = 55950 / 178800 = 0.31L

4 0

3 years ago

4. What mass of urea is produced from 9.0 liters of ammonia?

lana [24]

Answer:

12.07 g.

Explanation:

The balanced equation for the mentioned reaction is:

2NH₃(g) + CO₂(g) → H₂NCONH₂(g) + H₂O(g),

It is clear that 2.0 moles of NH₃ react with 1.0 mole of CO₂ to produce 1.0 mole of H₂NCONH₂ and 1.0 moles of H₂O.

Consider the reaction proceeds at STP conditions:

At STP, 9.0 L of NH₃ react with an excess of CO₂ gas:

It is known that at STP: every 1.0 mol of any gas occupies 22.4 L.

using cross multiplication:

1.0 mol of NH₃ represents → 22.4 L.

??? mol of NH₃ represents → 9.0 L.

∴ 9.0 L of NH₃ represents = (1.0 mol)(9.0 L)/(22.4 L) = 0.4018 mol.

To find the no. of moles of urea (H₂NCONH₂) produced:

Using cross multiplication:

2.0 mol of NH₃ produce → 1.0 mol of H₂NCONH₂, from stichiometry.

0.4018 mol of NH₃ produce → ??? mol of H₂NCONH₂.

∴ The no. of moles of H₂NCONH₂ = (1.0 mol)(0.4018 mol)/(2.0 mol) = 0.201 mol.

Now, we can find the mass of H₂NCONH₂ produced:

mass = n * molar mass = (0.201 mol) * (60.06 g/mol) = 12.07 g.

8 0

3 years ago

to treat a thyroid tumor a patient myst be given 150-mCi dose of iodine-131, supplied in a solution containg 32 mCi/mL what volu

kolezko [41]

That would be about 170/41=4.1

4 0

4 years ago

Is crashing cans a physical or chemical change? Explain why?

balu736 [363]

Ok I know this did it last year let's see chemical because you can't fix it back to its normal self

4 0

3 years ago

Read 2 more answers