In the following unbalanced chemical reaction, what belongs in the blank? C8H18 + O2à CO2 + H2O + _________ A. CO B. CO3 C. ener
2 answers:
Answer:
C. energy
Explanation:
The balanced reaction is:
This is essentially a combustion reaction in which a hydrocarbon such as octane in this case, reacts with oxygen to form carbon dioxide and water. Combustion reactions are exothermic which implies that energy is released as the reaction progresses. Thus, the given reaction can be represented by adding the term 'energy' to the product side of the reaction:
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Answer:
The increasing order of masses of molecule ions:
118 g/mol(75.8%) , 120 g/mol(24.2%)
Explanation:
Chlorine occurs as 35-Cl (75.8%) and 37-Cl (24.2%).
Atomic mass of 35-Cl = 35 g/mol
Atomic mass of 37-Cl = 37 g/mol
Mass of Chlorocyclohexane in which 35-cl is present as a chlorine atom:
Mass of Chlorocyclohexane in which 37-Cl is present as a chlorine atom:
The increasing order of masses of molecule ions:
118 g/mol(75.8%) < 120 g/mol(24.2%)