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V125BC [204]
3 years ago
13

After pyruvate oxidation, the chemical energy of how many carbons of the original glucose molecule is converted to chemical ener

gy in the form of atp in the remaining steps of cellular respiration?
Chemistry
1 answer:
Mars2501 [29]3 years ago
4 0
I believe the answer is 4 carbons. Glycolysis involves break down of glucose to two molecules of pyruvic acid (3 carbons) under aerobic conditions. At the end of glycolysis the two pyruvate molecules undergoes pyruvate oxidation to capture the remaining energy in the form of ATP. A carboxyl group is removed from pyruvate and released in the form carbon dioxide, leaving a two carbon molecule  which forms Acetyl-CoA (2 molecules). Acetyl-CoA then serves as a fuel for the citric acid cycle in the next stage of cellular respiration.
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Given that Avogadro's number is 6.02 X 1023. Calculate the number of molecules present in 100.0moles of
GREYUIT [131]

Answer: 6.02 x 10^25

Explanation:

In order to find the number of molecules you simply multiply the number of moles by 6.022 x 10^23.

1 mole is always equal to 6.022 x 10^23 no matter what element.

100.0 x 6.022 x 10^23 = 6.02 x 10^25

The answer only has three significant figures because 100.0 only has three.

7 0
3 years ago
The standard cell potential Ec for the reduction of silver ions with elemental copper is 0.46V at 25 degrees celsius. calculate
Cloud [144]

Answer : The \Delta G for this reaction is, -88780 J/mole.

Solution :

The balanced cell reaction will be,  

Cu(s)+2Ag^+(aq)\rightarrow Cu^{2+}(aq)+2Ag(s)

Here, magnesium (Cu) undergoes oxidation by loss of electrons, thus act as anode. silver (Ag) undergoes reduction by gain of electrons and thus act as cathode.

The half oxidation-reduction reaction will be :

Oxidation : Cu\rightarrow Cu^{2+}+2e^-

Reduction : 2Ag^++2e^-\rightarrow 2Ag

Now we have to calculate the Gibbs free energy.

Formula used :

\Delta G^o=-nFE^o

where,

\Delta G^o = Gibbs free energy = ?

n = number of electrons to balance the reaction = 2

F = Faraday constant = 96500 C/mole

E^o = standard e.m.f of cell = 0.46 V

Now put all the given values in this formula, we get the Gibbs free energy.

\Delta G^o=-(2\times 96500\times 0.46)=-88780J/mole

Therefore, the \Delta G for this reaction is, -88780 J/mole.

7 0
4 years ago
L'air est un mélange gazeux vrai/faux
matrenka [14]
L'air n'est pas un mélange gazeux, donc la réponse serait le verre
5 0
3 years ago
What isa the UIPAC name H3C<br> CH2-CH2-CH3<br> CH-CH-CH2-CH3<br> H3C—CH<br> CH<br> CH3
aliina [53]

Answer:

4–ethyl–2,3–dimethylheptane

Explanation:

To name the compound given above, do the following:

1. Locate the longest continuous carbon chain. This gives the parent name of the compound. In this case, the longest continuous carbon chain is 7. Thus the parent name is Heptane.

2. Identify the substituent group attached to the compound. In this case, the substituent group attached are:

a. Methyl (–CH₃). There are two methyl group attached.

b. Ethyl (–CH₂CH₃)

3. Locate the position of the substituent group attached to the compound by naming alphabetically.

a. The two Methyl (–CH₃) groups are located at carbon 2 and 3

b. The Ethyl (–CH₂CH₃) is located at carbon 4.

NOTE: The position of the Ethyl (–CH₂CH₃) group is the same from both side so we consider the lowest count for the methyl group.

4. Combine the above to obtain the name of the compound.

The name of the compound is:

4–ethyl–2,3–dimethylheptane

3 0
3 years ago
A student measures a volume as 25 ml, wheras the correct volume is 23 mL. What is the percent error?
otez555 [7]

Answer:

the other number is different

Explanation:

6 0
3 years ago
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