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ExtremeBDS [4]
3 years ago
9

Is it true or false I need help.

Chemistry
1 answer:
dsp733 years ago
4 0

Answer:

true

Explanation:

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Balance each of the following redox reactions occurring in basic solution.MnO−4(aq)+Br−(aq)→MnO2(s)+BrO−3(aq)Express your answer
Ahat [919]

Answer : The balanced chemical equation is,

2MnO_4^-(aq)+Br^-(aq)+H_2O(l)\rightarrow 2MnO_2(s)+BrO_3^-(aq)+2OH^-(aq)

Explanation :

Rules for the balanced chemical equation in basic solution are :

  • First we have to write into the two half-reactions.
  • Now balance the main atoms in the reaction.
  • Now balance the hydrogen and oxygen atoms on both the sides of the reaction.
  • If the oxygen atoms are not balanced on both the sides then adding water molecules at that side where the more number of oxygen are present.
  • If the hydrogen atoms are not balanced on both the sides then adding hydroxide ion (OH^-) at that side where the less number of hydrogen are present.
  • Now balance the charge.

The half reactions in the basic solution are :

Reduction : MnO_4^-(aq)+2H_2O(l)+3e^-\rightarrow MnO_2(s)+4OH^-(aq) ......(1)

Oxidation : Br^-(aq)+6OH^-(aq)\rightarrow BrO_3^-(aq)+3H_2O(l)+6e^-  .......(2)

Now multiply the equation (1) by 2 and then added both equation, we get the balanced redox reaction.

The balanced chemical equation in a basic solution will be,

2MnO_4^-(aq)+Br^-(aq)+H_2O(l)\rightarrow 2MnO_2(s)+BrO_3^-(aq)+2OH^-(aq)

8 0
3 years ago
2. Describe the steps involved, in order, when the sun’s energy is converted to light from a street lamp via a solar cell.
geniusboy [140]
- Light energy from sun is converted into electrical energy in a solar cell.
- Electrical energy is stored as chemical energy in the solar cell.
- Chemical energy is converted back into electrical energy at night.
- Electrical energy is converted into light energy from the street lamp.

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3 years ago
The animal kingdom is divided into two small groups name these two smaller groups and give examples of each include the characte
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Answer:

vertebrate and invertebrates

Explanation:

All Vertebrates  have a skeletal structure with a spinal backbone and well developed internal skeleton made up of bones and cartilage while Invertebrates have no backbone.

Vertebrate include fish, amphibians, reptiles, birds and mammals. Invertebrates include worms and jellyfish, spiders and crabs.

<u>common characteristics among vertebrates and invertebrates </u>

○ multi-cellular.

○ heterotrophs (cannot make their own food) and must get their energy by consuming plants or other animals.

○ obtain food and oxygen for energy,

5 0
3 years ago
A map. The map shows the physical features of the Fertile Crescent. The Fertile Crescent begins at the northern end of the Persi
lys-0071 [83]

Answer:

The Persian Gulf and the Tigris and Euphrates

Explanation:

5 0
3 years ago
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An example of a mixture is:<br> A)pure water<br> B)gold <br> C)salt water<br> D)silver
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An example of a mixture is salt water... it can be seperated into salt and water.

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3 years ago
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