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Yanka [14]
3 years ago
13

What substance has Hf defined as 0 kJ/mol?

Chemistry
1 answer:
notsponge [240]3 years ago
5 0

O2 (g)

Hope this helps! (:

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A diffusion coefficient KG was determined for the diffusion of a gas A through a stagnant film B [KG = 0.88 mol//h-ft2-atm].
Angelina_Jolie [31]

Explanation:

Transfer of mass A into stagnant film B depends on the availability of driving force.

Whereas driving force is the pressure difference at the surface of A and the bulk.

As,       N_{A} \propto (P_{A1} - P_{A2})

           N_{A} = K_{G} \times (P_{A1} - P_{A2})

Therefore, putting the given values into the above formula as follows.

         N_{A} = K_{G} \times (P_{A1} - P_{A2})

                     = 0.88 \times (0.2 atm - 0.05 atm)

                     = 0.132 mol/h.ft^{2}

Thus, we can conclude that the flux of A from a surface into a mixture of A and B is 0.132 mol/h.ft^{2}

4 0
4 years ago
Type of energy that is stored in the core of an Adam
lorasvet [3.4K]

Answer: nuclear energy

Explanation:

7 0
4 years ago
(CH3)2.CBr. CH3<br> What it’s iupac name?
kicyunya [14]

Answer:

2 - Bromo - 2 - Methyl Propane

Explanation:

The structure of the compound is given in the attached image as;

The longest chain is; CH₃--C--CH₃ = 3 carbon atoms = Propane

It has two substituents on the middle carbon = CH₃  and  Br = 2 - Bromo- and 2 - Methyl

The IUPAC name is given as; 2 - Bromo - 2 - Methyl Propane

8 0
3 years ago
What would be the effect of bringing a negatively charged metal ball near an iron bar​
tensa zangetsu [6.8K]
Because The bar would become negatively charged and repel the metal ball. A magnetic north pole would be generated on the bar, and it would repel the metal ball.
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HBr + H2SO4 = SO2 + Br2 + H2O<br> Did S change oxidation number?
galben [10]

Answer: I think the answer might be yes..

Explanation:

7 0
3 years ago
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