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BarelyLegal
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Report Thread starter 15 years ago
#1
Can anyone help with these questions please?

What properties does petrol have that makes it an ideal fuel for cars?

What properties does mineral oil have which makes it useful for lubricating engine parts?

When doing the cracking experiment, what is the function of the broken up pieces of plant pot?

Cheers.
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oxymoron
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#2
Report 15 years ago
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In the cracking experiment - the plant pot acts as a catalyst.
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anchemis
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#3
Report 15 years ago
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(Original post by BarelyLegal)
Can anyone help with these questions please?

What properties does petrol have that makes it an ideal fuel for cars?

What properties does mineral oil have which makes it useful for lubricating engine parts?

When doing the cracking experiment, what is the function of the broken up pieces of plant pot?

Cheers.
OK... Q1... Petrol..
Cheap (I dissagree!!)
Volatile.. easily vaporised for combustion... u dont need to wait for the petrol to vaporise for too long.. think of the waiting time for the steam engine...
EXTREMELY FLAMMABLE... good... u dont need a nuclear reaction to drive you car
Energetically DENSE BY VOLUME (lots of energy produced per litre)... dont need a tanker size tank to drive 1 mile
RELATIVELY energetically dense by mass compared to Diesel... but really bad against Hydrogen
GOOD INFRASTRUCTURE + Technology to extract
STILL in good supply (NOTE: This Answer WILL BE WRONG IN 50 YEARS TIME)
CLEANER THAN COAL
Easier to carry around than Gas

Q2...What properties does mineral oil have which makes it useful for lubricating engine parts?
It is relatively inflammable (long Hydrocardons are hard to light... so wont explode in engine...
Hydrophobic... prevents rusting as it excludes water
NON-corrosive... u dont want to add corrosive stuff to your engine...

Q3..When doing the cracking experiment, what is the function of the broken up pieces of plant pot?
As a catalyst to lower the activation energy for the reaction so a larger proportion of molecules can react... err... its actually the aluminium complex in chinaware that catalyses cracking
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