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Nata [24]
3 years ago
9

You are given the reaction Cu + HNO3 → Cu(NO3)2 + NO + H2O. Half-reactions: First: 3 upper C u right arrow 3 upper C u superscri

pt 2 plus, plus 6 e superscript minus. Second: 2 upper N superscript 5 plus, plus 6 e superscript minus right arrow 2 upper N superscript 2 plus. Complete the final balanced equation based on the half-reactions. Cu + HNO3 Right arrow. Cu(NO3)2 + NO + H2O
Chemistry
2 answers:
Alona [7]3 years ago
8 0

Answer:

Explanation:

You are given the reaction Cu + HNO3 → Cu(NO3)2 + NO + H2O.

Half-reactions:

First: 3 upper C u right arrow 3 upper C u superscript 2 plus, plus 6 e superscript minus. Second: 2 upper N superscript 5 plus, plus 6 e superscript minus right arrow 2 upper N superscript 2 plus.

Complete the final balanced equation based on the half-reactions.

⇒ 3Cu +  

⇒ 8HNO3

⇒ 3Cu(NO3)2 +  

⇒ 2NO +  

⇒ 4H2O

nexus9112 [7]3 years ago
4 0

Answer: It is the first one. First: 3 upper C u right arrow 3 Upper C u superscript 2 plus, plus 6 e superscript minus. Second: 2 upper N superscript 5 plus, plus 6 e superscript minus right arrow 2 upper N superscript 2 plus.

Explanation:

Correct

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Answer: :)

Explanation:

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2 years ago
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C₂H₅0H+30₂→2CO₂+3H₂0,the change of enthalpy was ΔH= - 1235.7 KJ/mol
igor_vitrenko [27]

Answer:

The total enthalpy of the reaction has negative value which mean that the heat is lost during the chemical reaction into surroundings.

Explanation:

Exothermic reactions are defined as the reactions in which energy of reactants is more than the energy of the products. In these reactions, energy is released by the system.

The total enthalpy of the reaction (\Delta H) comes out to be negative.

Endothermic reactions are defined as the reactions in which energy of products is more than the energy of the reactants. In these reactions, energy is absorbed by the system.

The total enthalpy of the reaction (\Delta H) comes out to be positive.

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3 years ago
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Irina18 [472]

Answer:

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3 years ago
A saline solution contains 0.770 gg of NaClNaCl (molar mass = 58.55 g/molg/mol) in 133 mLmL of solution. Calculate the concentra
lukranit [14]

Answer:

0.104 M

Explanation:

<em>A saline solution contains 0.770 g of NaCl (molar mass = 58.55 g/mol) in 133 mL.</em>

<em />

The molar mass of the solute (NaCl) is 58.55 g/mol. The moles corresponding to 0.770 g are:

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The volume of solution is 133 mL. In liters,

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The molarity of NaCl is:

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