Jenny asks…
Where can i find 35% food-grade hidrogen peroxid in Portugal?
admin answers:
In the strength you are looking for?
Only for reg. Business or chemist.
You not trying to make a bomb – I hope?
Donald asks…
plants extract nonmineral nutrients-carbon,oxigen and hidrogen from?
chemistry
a) the ground
b) the air
c) water
d) organic matter
my conclusion is that can’t be one answer because the answer is :from the air and water.
admin answers:
Carbon comes from carbon dioxide (CO2).
Hydrogen comes from water (H2O).
Oxygen (O2) is released as a product of photosynthesis. It comes from both of the above.
From the choices, it would be air and water – b and c.
The ground gives a plant mineral nutrients, and is also where the plant absorbs water.
If you had to pick just one answer, go with air. Why? Because water can be in liquid or gas form, while carbon dioxide is never naturally found in liquid form.
Mark asks…
Is the new BMW Hidrogen car any good?
Is it as good as a gas car? I’m just curious.
admin answers:
BMW in and of itself is an expensive car, and an expensive car to maintain…Don’t go for this hydrogen thing ntil there are several years of a record to judge it by….
Mandy asks…
what is the future of hidrogen reactor for the automobiles?
admin answers:
However, several companies are investigating piping a small percentage of hydrogen into the intakes of engines to help in pollution control. The H2 would be generated chemically from gasoline. The future of this is uncertain. It seems to be counter productive, as generating H2 from gasoline has losses
George asks…
how to find volume of reactor for reaction between Hidrogen and nitrogen become amoniak?
admin answers:
Hydrogen and nitrogen react to form ammonia in what is called the Haber process.
The reaction is as follows:
N2 + 3 H2 2 NH3
This reaction will give about a 85% yield at 200°C (473 °K) and 200 atm of pressure. This is typically what is done in industry.
With special considerations to safety, you can get about 100% yield at 200°C and 750 atm of pressure.
The only remaining question is, how much do you want to make?
I will assume 100 kg per batch. You can recalculate for different amounts.
The molecular weight of ammonia is 17 g/mol, so 100 kg will have 100 kg / 0.017 kg/mol = 5882 mol
To produce 5882 mol of NH3, you need 2941 mol of N2 and 17646 mol of H2
So, the maximum number of moles of gas will be at the beginning of the reaction: 2941 + 17646 mol = 20587 mol
Using the ideal gas law:
PV = nRT, where R is the gas constant and n is the number of moles
V = nRT/P = 20587 mol * .082057 L*atm / mol*K * 473°K / 750 atm = 1065 L = 1.065 m3
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