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3 years ago

Which buffer system is found in the human body?

Chemistry

2 answers:

AveGali [126]3 years ago

7 0

Answer:

Bicarbonate buffer system

Explanation:

The human body uses a bicarbonate buffer system to maintain blood pH at a reasonable level. Without it, we'd be dead.

STatiana [176]3 years ago

7 0

Answer: C. bicarbonate buffer system

The bicarbonate buffer system helps to regulate the pH levels of our body.

A healthy pH range is about 7.35 to 7.45.

Hope this helps!

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What is the source of energy that provides the boost for electrons during photosynthesis

Elodia [21]

Answer:

The sun

Explanation:

The sun is the source of energy that provides the boost for electrons during photosynthesis

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3 years ago

How are rechargeable batteries recharged? a. Adding new reactants c. Passing electric charge through the reactants b. Changing t

olchik [2.2K]

c. Passing electric charge through the reactants Is the answer to you're question.

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3 years ago

Calculate the solubility of hydrogen in water at an atmospheric pressure of 0.380 atm (a typical value at high altitude).

Pani-rosa [81]

The question is incomplete, here is the complete question:

Calculate the solubility of hydrogen in water at an atmospheric pressure of 0.380 atm (a typical value at high altitude).

Atmospheric Gas Mole Fraction kH mol/(L*atm)

$N_2$ $7.81\times 10^{-1}$ $6.70\times 10^{-4}$

$O_2$ $2.10\times 10^{-1}$ $1.30\times 10^{-3}$

Ar $9.34\times 10^{-3}$ $1.40\times 10^{-3}$

$CO_2$ $3.33\times 10^{-4}$ $3.50\times 10^{-2}$

$CH_4$ $2.00\times 10^{-6}$ $1.40\times 10^{-3}$

$H_2$ $5.00\times 10^{-7}$ $7.80\times 10^{-4}$

Answer: The solubility of hydrogen gas in water at given atmospheric pressure is $1.48\times 10^{-10}M$

Explanation:

To calculate the partial pressure of hydrogen gas, we use the equation given by Raoult's law, which is:

$p_{\text{hydrogen gas}}=p_T\times \chi_{\text{hydrogen gas}}$

where,

$p_A$ = partial pressure of hydrogen gas = ?

$p_T$ = total pressure = 0.380 atm

$\chi_A$ = mole fraction of hydrogen gas = $5.00\times 10^{-7}$

Putting values in above equation, we get:

$p_{\text{hydrogen gas}}=0.380\times 5.00\times 10^{-7}\\\\p_{\text{hydrogen gas}}=1.9\times 10^{-7}atm$

To calculate the molar solubility, we use the equation given by Henry's law, which is:

$C_{H_2}=K_H\times p_{H_2}$

where,

$K_H$ = Henry's constant = $7.80\times 10^{-4}mol/L.atm$

$p_{H_2}$ = partial pressure of hydrogen gas = $1.9\times 10^{-7}atm$

Putting values in above equation, we get:

$C_{H_2}=7.80\times 10^{-4}mol/L.atm\times 1.9\times 10^{-7}atm\\\\C_{CO_2}=1.48\times 10^{-10}M$

Hence, the solubility of hydrogen gas in water at given atmospheric pressure is $1.48\times 10^{-10}M$

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3 years ago

Giải gấp giúp em câu này với ạ:

padilas [110]

Explanation:

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3 years ago

Landslides are an example of

ivanzaharov [21]

Answer:

b. erosion.

I believe that this is the best answer

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2 years ago

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