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Len [333]
3 years ago
13

Please help Asap………………

Chemistry
2 answers:
vladimir2022 [97]3 years ago
6 0

Answer:

3rd

Explanation:

Gemiola [76]3 years ago
3 0

The coeffecients should be 2, 1, 2.  

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5 H2O2(aq) + 2 MnO4-(aq) + 6 H+(aq) → 2 Mn2+(aq) + 8 H2O(l) + 5 O2(g) In a titration experiment, H2O2(aq) reacts with aqueous Mn
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Answer:

Oxygen in hydrogen peroxide oxidizes from -1 to 0.

Explanation:

Oxidation is the loss of electrons. The specie which is oxidized has has elevation in its oxidation state as compared in the reactant and the products.

The given reaction is shown below as:

5 H_2O_2_{(aq)} + 2 MnO_4^-_{(aq)} + 6 H^+_{(aq)}\rightarrow 2 Mn^{2+}_{(aq)} + 8 H_2O_{(l)} + 5 O_2_{(g)}

Manganese in MnO_4^- has oxidation state of +7

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Oxygen in hydrogen peroxide has an oxidation state of -1.

Oxygen in molecular oxygen has an oxidation of 0.

Thus, oxygen in hydrogen peroxide oxidizes from -1 to 0.

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3 years ago
WILL GIVE BRAINLIEST, Which of the following would have the greatest amount of surface area?
Elodia [21]

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C. 1 cubic foot of loose sand

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For many  objects having equal volume , surface area will be maximum

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Hence among the given option , surface area of loose sand will have greatest surface area . Loose sand is equivalent to small spheres .

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I will mark brainliest<br> What are dams? How do they help conserve water?
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A dam is a barrier that stops or restricts the flow of water or underground streams. Reservoirs created by dams not only suppress floods but also provide water for activities such as irrigation.

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When the water level increases they open gates in order to send out water. These dams allow us to store and not to drain water into oceans soon. A DAM is a barrier constructed to hold back water and raise its level

Explanation:

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What would happen if there were no neutrons in an atom?
AnnyKZ [126]
The mass of the atom would change. With no atoms being there then the mass would possibly change. With no neutrons then the mass of the atom will decrease 
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