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STatiana [176]
4 years ago
9

Which statement concerning ecosystems is correct?

Chemistry
1 answer:
professor190 [17]4 years ago
3 0

Answer:

I think A...

Explanation:

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Balance the redox reaction Al(s) + MnO4^- (aq) --> MnO2 (s) + Al(OH)4^- (aq) in aqueous basic solution
GREYUIT [131]

Answer:

Al + MnO4- + 2H2O → Al(OH)4- + MnO2

Explanation:

First of all, we out down the skeleton equation;

Al + MnO4- → MnO2 + Al(OH)4-

Secondly, we write the oxidation and reduction equation in basic medium;

Oxidation half equation:Al + 4H2O + 4OH- → Al(OH)4- + 4H2O + 3e-

Reduction half equation:MnO4- + 4H2O + 3e- → MnO2 + 2H2O + 4OH-

Thirdly, we add the two half reactions together to obtain:

Al + MnO4- + 8H2O + 4OH- + 3e- → Al(OH)4- + MnO2 + 6H2O + 3e- + 4OH-

Lastly, cancel out species that occur on both sides of the reaction equation;

Al + MnO4- + 8H2O→ Al(OH)4- + MnO2 + 6H2O

The simplified equation now becomes;

Al + MnO4- + 2H2O → Al(OH)4- + MnO2

4 0
3 years ago
What is the acceleration of a 5 kg mass pushed by a 10 N force?
Olin [163]

Answer:

Here the force is 10N and the mass is 5 kg. Dividing both sides by 5kg, we get a = 2 m/s^2.

5 0
3 years ago
What ions are associated with acids
kondor19780726 [428]
Blank de clan be hope she's helps youuuuuu
4 0
3 years ago
Read 2 more answers
When copper (I) oxide dissolves in dilute sulfuric acid, copper (II) sulfate and copper are produced
const2013 [10]

Answer:

Cu2O + H2SO4 ——> CuSO4 + Cu + H2O

Cu2O is oxidized and reduced. It lost an electron in CuSO4 for the 2+ charge, but it gained an electron in Cu to go from the 1+ charge to a neutral charge. This is dismutation (aka disproportionation)

Explanation:

7 0
4 years ago
For the reaction 2 A + 4 B → 2 C + 4 D, what is the absolute magnitude of the rate of change for [B] when [C] is increasing at 4
Hoochie [10]

Answer:

r_B=9.6M/s

Explanation:

Hello there!

In this case, according to the given chemical reaction, it is possible for us to relate the rate of formation of C and the rate of consumption of B as shown below:

\frac{r_B}{-4}=\frac{r_C}{2}  \\\\

Thus, we solve for the rate of change of B as shown below:

r_B=\frac{-4r_C}{2}\\\\r_B=\frac{-4(4.8M/s)}{2} \\\\r_B=9.6M/s

Best regards!

8 0
3 years ago
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