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Veseljchak [2.6K]
4 years ago
13

If you guys don’t mind can you explain to me why u think it’s either A, b, c, d plz and thank you

Chemistry
1 answer:
sveticcg [70]4 years ago
8 0

Answer: answer is D

Explanation:

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Help plzzzz
Ilya [14]

Answer:

option b is correct

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4 0
3 years ago
Read 2 more answers
The study of chemicals that, in general, do not contain carbon is traditionally called what type of 18?
Pie
I don't know what you mean by type of 18, but it is called inorganic chemistry.
5 0
3 years ago
Which of the following compounds is NOT a molecule (not covalent)?
icang [17]

Explanation:

compounds is not is oco2

4 0
3 years ago
Calcium oxide forms when an atom of calcium loses two electrons giving it a +2 charge and an atom of oxgen picks up two electron
Novosadov [1.4K]
Electrically neutral
8 0
3 years ago
Ethanol is a possible fuel. Use average bond energies to calculate ΔHrxn for the combustion of ethanol. CH3CH2OH(g) + 3 O2(g) →
Maksim231197 [3]

Explanation:

The reaction is as follows.

       CH_{3}CH_{2}OH(g) + 3O_{2}(g) \rightarrow 2CO_{2} + 3H_{2}O(g)

Standard values of bond energies are as follows.

C-C = 347 kJ/mol

C-H = 414 kJ/mol

C-O = 360 kJ/mol

O-H = 464 kJ/mol

O=O = 498 kJ/mol

C=O = 799 kJ/mol

Hence, calculate the change in enthalpy of the reaction as follows.

 \Delta H_{rxn} = \sum \text{bond energy of reactants} - \sum \text{bond energy of products}

= [5(C-H) + 1(C-C) + 1(C-O) + 1(O-H) + 3(O=O)] - [4(C=O) + 6(O-H)]

 = [5 \times 414 + 1 \times 347 + 1 \times 360 + 1 \times 464 + 3 \times 498] kJ - [4 \times 799 + 6 \times 464]kJ

       = (4735 - 5980) kJ

       = -1245 kJ

Thus, we can conclude that the enthalpy of given reaction is -1245 kJ.

3 0
3 years ago
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