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Morgarella [4.7K]
2 years ago
8

PLS

Chemistry
1 answer:
MrRissso [65]2 years ago
8 0

Answer:

A decomposition reaction occurs when one reactant breaks down into two or more products. This can be represented by the general equation: AB → A + B. Examples of decomposition reactions include the breakdown of hydrogen peroxide to water and oxygen, and the breakdown of water to hydrogen and oxygen.

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Using the table below, what is the change in enthalpy for the following reaction? 3CO (g) + 2Fe2O3 (s) Imported Asset Fe(s) + 3C
zhuklara [117]

To solve this problem, we should recall that the change in enthalpy is calculated by subtracting the total enthalpy of the reactants from the total enthalpy of the products:

ΔH = Total H of products – Total H of reactants

You did not insert the table in this problem, therefore I will find other sources to find for the enthalpies of each compound.

ΔHf CO2 (g) = -393.5 kJ/mol

ΔHf CO (g) = -110.5 kJ/mol

ΔHf Fe2O3 (s) = -822.1 kJ/mol

ΔHf Fe(s) = 0.0 kJ/mol

Since the given enthalpies are still in kJ/mol, we have to multiply that with the number of moles in the formula. Therefore solving for ΔH:

ΔH = [<span>3 mol </span><span>( − </span><span>393.5 </span>kJ/mol<span>) + 1 mol (</span>0.0 kJ/mol)<span>] − [</span><span>3 mol </span><span>( − </span><span>110.5 </span>kJ/mol<span>) + </span><span>2 mol </span><span>( − </span><span>822.1 </span>kJ/mol<span>)]</span>

ΔH = <span>795.2 kJ</span>

3 0
2 years ago
Which of the following is the correct model of C6H14?
asambeis [7]

Answer:

This question is incomplete

Explanation:

This question is incomplete because of the absence of options. However, the compound C₆H₁₄ is hexane. Hexane is a member of saturated hydrocarbons (homologous series) called alkanes (with the general formula CₙH₂ₙ₊₂). The structure for an hexane is shown below

     H   H   H   H   H   H

      I     I    I     I     I     I

H - C - C - C - C - C - C - H

      I     I     I    I      I    I

     H   H   H   H    H  H

which can also be written as

CH₃CH₂CH₂CH₂CH₂CH₃

3 0
2 years ago
Read 2 more answers
How many moles of hydrogen sulfide are contained in a 77.7-8 sample of this gas?
valentina_108 [34]

Answer:

its either C or D my guess is C though because 35.0g of hyddrogen is =1.03 mol

Explanation:

7 0
3 years ago
How many hydrogen atoms are in CH2OH?<br><br> a-10<br> b-3<br> c-5<br> d-4
igomit [66]

Answer:

B)3

Explanation:

I'm assuming the 2 is meant to be smaller. If it were a regular size 2 the answer would be 2 and that isn't an option

7 0
3 years ago
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which element is the most electronegative out of the following K Mn Br WILL MARK BRAINLIEST!
SashulF [63]
The correct answer is:  [C]:  "Br"  {"bromine"} .
_______________________________________________________
8 0
3 years ago
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