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ElenaW [278]
3 years ago
9

Plpwkejnrhbgvjdhebr 15 points!

Chemistry
2 answers:
Tanzania [10]3 years ago
7 0

Answer: the answer is b

Explanation:

Alex73 [517]3 years ago
7 0
Water and carbohydrates probably sorry if I get it wrong
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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
How many moles of NaOH are present in 25.0 mL of a 0.1000 M NaOH solution?
Kisachek [45]
25 * 10^-3 L * 0.1 Mole/L = 25*10^-4 Moles

Hope it helps.
4 0
3 years ago
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Lithium (Li) is in the 2nd row, so the 1st row is already full (1s2). Since lithium (Li) is in the 2nd row, the s-block, and the
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The electron configuration of Lithium is 1s2 2s1
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4 years ago
How does an enzyme’s active site relate to its substrate?
Fofino [41]

Answer:

The enzyme's active site must be the mold shape of the substrate.

Explanation:

An enzyme and a substrate bind together in order to work. If the shapes of the 2 are different, they will not be able to bond together. If the shapes of the 2 fit glove-in-hand, then they will be able to bond together.

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1. How much taller is the average person today than the average person 100 years ago?
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