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coldgirl [10]
3 years ago
8

Which buffer system is found in the human body?

Chemistry
2 answers:
miv72 [106K]3 years ago
7 0

Answer:

C. phosphate buffer system

Explanation:

A buffer is either a solution of a weak acid and its conjugate base (acid buffer) or a solution of a weak base and its conjugate acid (base buffer). The function of a buffer is to essentially resist the change in pH upon addition of and acid (or a base).

There are 3 buffer systems that are present in the human body:

-Phosphate buffer

-Bicarbonate buffer

-Protein buffer

The correction option is therefore:

Phosphate buffer system which is an acid buffer involving the dihydrogen phosphate ion H₂PO₄⁻ which a weak acid and hydrogen phosphate HPO₄²⁻ which is the conjugate base. The function of the phosphate buffer is to help maintain the pH of cells in the human body.

amid [387]3 years ago
5 0

Based on the options given, the most likely answer to this query is C. phosphate buffer system. This type of buffer system is observed to operate among the fluids of the cells. Thank you for your question. Please don't hesitate to ask in Brainly your queries. 
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What is the coefficient of Ca(OH)2 in the equation Ca(OH)2 + HNO3 → Ca(NO3)2 + H2O when balanced using the smallest possible coe
Vikentia [17]

Answer:

The coefficient of Ca(OH)2 is 1

Explanation:

Step 1: unbalanced equation

Ca(OH)2 + HNO3 → Ca(NO3)2 + H2O

Step 2: Balancing the equation

On the right side we have 2x N (in Ca(NO3)2 ) and 1x N on the left side (in HNO3). To balance the amount of N on both sides, we have to multiply HNO3 by 2.

Ca(OH)2 + 2HNO3 → Ca(NO3)2 + H2O

On the left side we have 4x H (2xH in Ca(OH)2 and 2x H in HNO3), on the right side we have 2x H (in H2O). To balance the amount of H on both sides, we have to multiply H2O on the right side, by 2.

Now the equationis balanced.

Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O

The coefficient of Ca(OH)2 is 1

4 0
3 years ago
Using the method of initial rates for the reaction a → b, if the initial concentration of a is doubled and the rate of reaction
zmey [24]
Answer is: reaction is second order with respect to a.
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</span>rate of reaction = k[a]².
k is second order rate constant and have unit M⁻¹·s⁻¹.
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4 0
3 years ago
Draw the Lewis structure for BCl3. How many single bonds, double bonds, triple bonds, and unshared pairs of electrons are on the
andreev551 [17]

Answer :  The number of single bonds, double bonds, triple bonds, and unshared pairs of electrons on the central atom are, 3, 0, 0 and 0 respectively.

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, BCl_3

As we know that boron has '3' valence electrons and chlorine has '7' valence electrons.

Therefore, the total number of valence electrons in BCl_3 = 3 + 3(7) = 24

According to Lewis-dot structure, there are 6 number of bonding electrons and 18 number of non-bonding electrons.

From the Lewis-dot structure we conclude that,

The number of single bonds, double bonds, triple bonds, and unshared pairs of electrons on the central atom are, 3, 0, 0 and 0 respectively.

3 0
4 years ago
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Marat540 [252]

Answer:

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4 0
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Nemistry I sem
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Answer:

A

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