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sveticcg [70]
3 years ago
10

What types of reactions is shown below? check all that apply 2H2O2–>2H2O+O2

Chemistry
2 answers:
rosijanka [135]3 years ago
5 0

Answer:

Type of reactions :

  • Decomposition (O is seperated)
Zigmanuir [339]3 years ago
3 0
B is the answer to your question ....
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3 years ago
4). One mole of monoclinic sulfur at 25C was placed in a constant-pressure calorimeter whose heat capacity (C) was 1620 J/K. T
andre [41]

<u>Answer:</u> The enthalpy change of the reaction is -243 J/mol

<u>Explanation:</u>

The heat released by the reaction is absorbed by the calorimeter and the solution.

The chemical equation used to calculate the heat released follows:

q=c\times \Delta T

where,

c = heat capacity of calorimeter = 1620 J/K

\Delta T = change in temperature = 0.150^oC=0.150K   (Change remains same)

Putting values in above equation, we get:

q=1620J/K\times 0.15K=243J

<u>Sign convention of heat:</u>

When heat is absorbed, the sign of heat is taken to be positive and when heat is released, the sign of heat is taken to be negative.

For the given chemical reaction:

S\text{ (monoclinic)}\rightarrow S\text{ (orthorhombic)}

We are given:

Moles of monoclinic sulfur = 1 mole

  • To calculate the enthalpy change of the reaction, we use the equation:

\Delta H_{rxn}=\frac{q}{n}

where,  

q = amount of heat released = -243 J

n = number of moles = 1 mole

\Delta H_{rxn} = enthalpy change of the reaction

Putting values in above equation, we get:

\Delta H_{rxn}=\frac{-243J}{1mol}=-243J/mol

Hence, the enthalpy change of the reaction is -243 J/mol

8 0
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How many covalent bonds does carbon form in neutral compounds?
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The answer to this question is 5
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When a highly reactive metal, such as lithium (Li), is mixed with a highly reactive nonmetal, such as chlorine (Cl), they will m
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Answer:

True

Explanation:

lithium atoms lose one electron each while chlorine atoms gain one electron each

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<span>The elements on the Periodic Table are arranged in order of increasing "Atomic number"

In short, Your Answer would be Option B

Hope this helps!</span>
6 0
3 years ago
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