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Olin [163]
3 years ago
9

Pure water is 40 percent acid and 60 percent alkaline True or false

Chemistry
1 answer:
Verdich [7]3 years ago
3 0
The answer would be true
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5Fe2 2Mn2 8H2O2MnO4- 5Fe 16H In the above reaction, the oxidation state of iron changes from to . How many electrons are transfe
Ostrovityanka [42]

Answer:

The oxidation number of iron changes from 2+ to 0.

10 electrons are transferred in the reaction.

Explanation:

Step 1: Write the balanced redox reaction

5 Fe²⁺ + 2 Mn²⁺ + 8 H₂O ⇒ 2 MnO₄⁻ + 5 Fe + 16 H⁺

Step 2: identify both half-reactions

Reduction: 5 Fe²⁺ + 10 e⁻ ⇒ 5 Fe

Oxidation: 2 Mn²⁺ + 8 H₂O ⇒ 2 MnO₄⁻ + 16 H⁺ + 10 e⁻

Step 3: Identify the oxidation state change of iron

Iron changes from Fe²⁺ to Fe, that is, the oxidation number changes from 2+ to 0.

Step 4: Determine how many electrons are transferred in the reaction?

According to both balanced half-reactions, 10 electrons are transferred in the reaction.

5 0
3 years ago
When discussing acids and bases any substance that accepts a patron by definition is considered an
vredina [299]

Brønsted-Lowry acid.

8 0
3 years ago
Which of the following leads to a higher rate of diffusion?
miv72 [106K]
<h3><u>Answer;</u></h3>

Higher velocity of particles

<h3><u>Explanation;</u></h3>

The diffusion rate is determined by a variety of factors which includes;

  • Temperature such that the higher the temperature, the more kinetic energy the particles will have, so they will move and mix more quickly and the diffusion rate will be high.
  • Concentration gradient such that the greater the difference in concentration, the quicker the rate of diffusion.
  • Higher velocity of particles increases the diffusion rate as this means more kinetic energy by the particles and hence the particles will mix and move faster, thus higher diffusion rate.
5 0
3 years ago
A cool, yellow-orange flame is used to heat the crucible. Would this affect the mass of the crucible? If so, how?
s2008m [1.1K]

Answer:

yes

Explanation:

Usually, it would not affect the crucible, but depending on the temperature of the flame the enamel of the crucible may begin to melt and stick to the metal object being used to handle the crucible. This tiny amount that is melted off can cause very small changes in the original mass of the crucible, which although it is almost unnoticeable it is still there. Therefore, the answer to this question would be yes.

5 0
3 years ago
Differentiate between short period and long period in modern periodic table​
AfilCa [17]
The difference between short period and long period is based upon the number of elements in each period. Shortest period is the first period which contains elements, while the longest period is the 6th period which contains 32 elements.
8 0
3 years ago
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