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Paul [167]
2 years ago
14

What does the answer of element 3Na2S2O3?

Chemistry
1 answer:
Fynjy0 [20]2 years ago
4 0

Answer:

Explanation:

3× 22+2×32+ 6×16=

66+64+96=236

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The correct answer would be the first one. The reaction that will not conduct electricity would be  CH3OH(l) = CH3OH(aq) since it stays as a single molecule in solution. It does not have any free electrons that will allow the flow of current into the solution. Other options dissociates into ions which has free electrons so they allow current to flow.
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Use bond enthalpy values to calculate the enthalpy change for the following reaction. Then, label if the reaction is endothermic
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Based on the bond energies given, the enthalpy change for the reaction of is -33 kJ and the reaction is exothermic.

<h3>What is the change in bond energy of a reaction?</h3>

The change in bond energy of a reaction is calculated using the formula below:

  • change in bond energy = sum of energies of bonds broken - sum of energies of bonds formed

A reaction is exothermic if the change in bond energy is negative.

A reaction is endothermic if the change in bond energy is positive.

Given the bond enery values above:

sum of energies of bonds broken = 4 × C-H + Br-Br

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Therefore, the enthalpy change for the reaction of is -33 kJ and the reaction is exothermic.

Learn more about enthalpy change at: brainly.com/question/11628413

7 0
2 years ago
Can a metal and a nonmetal participate in a combination reaction
nikklg [1K]

Answer:

Yes

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A reaction normally takes place between metals and non metals. The metals acts as the electron donors and the non metals acts as the electron acceptors. This exchange of electrons form bonds such as ionic or covalent.

A good example of a reaction between a metal and non metal is Sodium metal and Chlorine(non metal). They form an ionic bond and the product is Sodium chloride.

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Solnce55 [7]

Answer:

1,2, and 3 are correct.

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1 is true because cellular respiration begins in the cytoplasm of a cell. 2 is true because cellular respiration releases energy aerobically which uses glucose and oxygen or anaerobically which just uses glucose. Either way, energy is being released. 3 is true, I don't know how to explain why. Just keep the cellular respiration equation in mind, (C6H12O6 + 6O2 → 6CO2 + 6H2O + Chemical Energy (in ATP)), the chemical reactions are basically summed up into an equation. Hope that helped.

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