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3 years ago

How do buffers work in the human body?

Chemistry

2 answers:

mariarad [96]3 years ago

6 0

Answer is: They can help prevent a deadly change in blood pH.

A buffer can be defined as a substance that prevents the pH of a solution from changing by either releasing or absorbing H⁺ in a solution.

Buffer is a solution that can resist pH change upon the addition of an acidic or basic components and it is able to neutralize small amounts of added acid or base, pH of the solution is relatively stable.

The normal pH in the mammals arterial blood is between 7.35 and 7.50, so acidosis occurs when arterial pH falls below 7.35. Acidosis is a process causing increased acidity (increased hydrogen ion or proton H⁺ concentration) in the blood and other body tissues.

Alkalosis occurs at a pH over 7.45.

zmey [24]3 years ago

5 0

Buffers in the human body can help to prevent a deadly change in blood pH.

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Consider the following mechanism for the reaction between nitric oxide and ozone:

swat32

Answer:

A . 2 O₃(g) + 2 NO ⇒ 2 O₂ (g) + 2 NO₂(g)

B . Yes

C. O and NO₃

Explanation:

A. The overall reaction is obtained by adding the individual steps in the reaction mechanism where we will get the reactants and product and the intermediates will cancel.

Thus, adding 1+ 2 +3 we get

2 O₃(g) + 2 NO ⇒ 2 O₂ (g) + 2 NO₂(g)

B. The reaction intermediates are those that are produced from the initial and/or subsequent steps and are consumed later on in the reaction mechanism, but are neither reactants nor products, they just participate.

From this definition it follows that O(g) and NO₃ are reaction intermediates.

C. O and NO₃

6 0

3 years ago

A plane mirror is useful for seeing:

AURORKA [14]

C. A nearly identical image.

6 0

3 years ago

Consider the element carbon. How many electrons can be found in a carbon atom? How many are valence electrons?

Eva8 [605]

Answer:

option B= 6 : 4

Explanation:

Properties:

1. Carbon have six electron and six proton.

2. The two electrons are present in first shell while remaining of four electrons are present in the second shell.

3. it is non-metallic element and present in the group fourteen of periodic table.

4. its atomic mass is 12.0107 u.

5. its melting and boiling point is 3550 °C and 4827 °C respectively.

Uses:

1. it is used as a fuel in the form of coal.

2. in the form of graphite it is used in dry cells, as a lubricant, in pencil and high temperature crucible.

3. it is also used in jewelry in the form of diamond and because of its hard nature used in industries for drilling, polishing, cutting and grinding.

4. carbon black powder is used in printer ink.

5. its most common alloy with iron is steel.

6. it form variety of compound with number of other elements like nitrogen, hydrogen, oxygen etc.

Electronic configuration:

1s2, 2s2, 2p2

Isotopes of carbon:

There are fifteen isotopes of carbon from C8 - C22. The isotopes C12 and C13 are stable while C14 is radioactive.

4 0

4 years ago

When CaCO3(s) decomposes into CaO +CO2, the reaction is called?

liberstina [14]

$\qquad \qquad\huge \underline{\boxed{\sf Answer}}$

This reaction is called decomposition reaction, furthermore it can be said to be decomposition of limestone.

The balanced chemical equation for the reaction is ~

$\qquad \sf \dashrightarrow \: CaCO_3 = CaO + CO_2$

5 0

2 years ago

What mass of Cu(s) is electroplated by running 24.5A of current through a Cu2+(aq)solution for 4.00 h?Express your answer to thr

Masja [62]

Answer: 116 g of copper

Explanation:

$Q=I\times t$

where Q= quantity of electricity in coloumbs

I = current in amperes = 24.5A

t= time in seconds = 4.00 hr = $4.00\times 3600s=14400s$ (1hr=3600s)

$Q=24.5A\times 14400s=352800C$

$Cu^{2+}+2e^-\rightarrow Cu$

$2\times 96500C=193000C$ of electricity deposits 63.5 g of copper.

352800 C of electricity deposits = $\frac{63.5}{193000}\times 352800=116g$ of copper.

Thus 116 g of Cu(s) is electroplated by running 24.5A of current

Thus remaining in solution = (0.1-0.003)=0.097moles

8 0

3 years ago