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Dmitry [639]
3 years ago
12

The Blood-Brain Barrier (BBB) is a semipermeable membrane that separates blood and the brain. Which choices below would successf

ully cross the BBB without any help?
Chemistry
1 answer:
AveGali [126]3 years ago
6 0

Answer:

water, carbon monoxide gas, Small lipid soluble substances

Explanation:

The BBB is a highly selective semi permeable membrane which prevents the solute in the blood from crossing or passing through the central nervous system of human brain.

It separates the blood from the brain.

In the context,

-- Water successfully crosses the BBB without any help. It can cross through diffusion.

-- carbon monoxide gas can cross BBB. Haemoglobin in blood has 200 times more affinity towards the carbon monoxide when it is compared with oxygen. This is why carbon monoxide poisoning affects the brain.

--- Small lipid soluble substances can also cross BBB without any help.

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Complete the charge balance equation for an aqueous solution of h2co3 that ionizes to hco−3 and co2−3.
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The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

<h3>What is Balanced Chemical Equation ?</h3>

The balanced chemical equation is the equation in which the number of atoms on the reactant side is equal to the number of atoms on the product side in an equation.

The equation for aqueous solution of H₂CO₃ is

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The charge balance equation is

[HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

Thus from the above conclusion we can say that The charge balance equation for an aqueous solution of H₂CO₃ that ionizes to HCO₃⁻ and CO₃⁻² is [HCO₃⁻] =  2[CO₃⁻²] + [H⁺] + [OH⁻]

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8 0
2 years ago
When the ph of an aqueous solution is changed from 1 to 2, the concentration of hydronium ions in the solution is.
kiruha [24]

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decreased by a factor of 10

Explanation:

pH is defined in such a way that;

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Given that pH is changed from 1 to 2,

By rearranging the above formula , we get 10−pH = H

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Therefore,  0.1/0.01 = 10 and 0.1 > 0.01

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20.00 mL of a 0.077 M solution of silver nitrate, AgNO3
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