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timama [110]
4 years ago
13

Imagine you have a membrane through which oxygen can diffuse with a diffusion coefficient D = 5x10-10 m2/s. The concentration of

O2 on one side of the membrane is 5x1022 atoms/m3, and on the other side it is 3.5x1022 atoms/m3. If the membrane is 2.5x10-9 m thick, what is the diffusive flux of oxygen J?
Chemistry
1 answer:
Vesna [10]4 years ago
5 0

Answer:

3.0x10²¹ atoms/m².s

Explanation:

The diffusive flux is the rate at the diffusion happens and can be calculated by:

J = D*ΔC/e

Where D is the diffusion coefficient, ΔC is the concentration variation and e is the membrane thickness, so:

J = 5x10⁻¹⁰m²/s x (5x10²² - 3.5x10²²)atoms/m³/(2.5x10⁻⁹m)

J = 3.0x10²¹ atoms/m².s

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Ulleksa [173]

Answer: D . Animals with more complex brains have a greater capacity to learn.

Explanation:

The different parts of the brain are responsible for distinct processes like thinking, control of behavior, learning, reasoning, speech, emotions, muscle movements, controls balance, and others. This aids in the fact that complex the brain more different functions it can perform. The large brain size as well as volume is associated with better cognitive functions along with complexity. The specific regions of the brain that can be correlated with the volume as well as intelligence are temporal, parietal and frontal parts of the brain in animals and in humans.

4 0
3 years ago
Mike is in a hardware store. He hears a large crash and turns toward the noise. He sees a toddler walking by an overturned cart.
mars1129 [50]
The answer is option A. hope this helps
3 0
3 years ago
Read 2 more answers
According to the molecular orbital energy-level diagram below, which one of the following statements is not correct about NO, NO
Lubov Fominskaja [6]

None of the statement is not correct about NO, NO+, and NO−.

Explanation:

Those molecules whose all subshells are completely filled are diamagnetic.

Those molecules whose any sub-shell is incomplete is termed paramagnetic.

Let us check the magnetism in all three molecules based on molecular orbital theory and Lewis structure

NO= number of electrons 11

It form N=O having configuration 1s2,2s2,2p6,3s1, it has 1 unpaired electron so it is paramagnetic.

Now NO-, number of electrons 12 having configuration 1s2,2s2,2p6,3s2, no unpaired electron hence dimagnetic.

Now NO+, number of electrons is 10 having configuration 1s2,2s2,2p6,3s2, dimagnetic

Let us calculate the bond order of NO-

N0- have 12 electrons as 5 of nitrogen, 6 of oxygen and 1 of - charge on oxygen.

So, bond order = \frac{8-4}{2}

                          = 2 double bonds

bond order of NO+, Number of electrons is 10

bond order= \frac{8-2}{2}

bond order = 3

bond order of NO, number of electrons 11

bond order= \frac{8-3}{2}

bond order=2.5

Larger the bond order shorter the bond.

4 0
4 years ago
Could someone tell me if i’m correct
vladimir1956 [14]
Yeahh you should be anyways!!
7 0
3 years ago
Read 2 more answers
How to prove that a given colorless liquid is an acid​
Pachacha [2.7K]

Answer:

Explanation:

by using litmus papaer it will turn into red if solutions is acidic

and into blue if it's basic

by using Magnesium ribbon. Magnesium do not react with bases so hydrogen gas will produce when Magnesium is dipped in an acidic solution

5 0
3 years ago
Read 2 more answers
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