Correct answer: <span>An isomer with a branched structure will require:
less energy to melt than the straight chain structure.
Reason:
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The branched chain compounds have lower melting and boiling points as compared to straight chain isomers.This is due to the fact that branching makes the molecule more compact. This results in decreases in surface area of isomer. But, the intermolecular attractive forces depends on the surface area of compound. Thus, branched isomers have lower intermolecular force of interaction, as compared to straight chain isomers. Consequently, the melting/boiling points of the branched chain isomers are lower as compared to straight chain isomers.
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Answer:
Explanation:
Heat of combustion of = -1366.8 kJ/mol
Heat of formation of = -393.5 kJ/mol
Heat of formation of = -285.8 kJ/mol
The reaction is
Assuming is the standard enthalpy of formation of ethanol
The standard enthalpy of formation of ethanol is .
Answer:
2s
Explanation:
Given parameters:
Acceleration of the truck = 15m/s²
change in Velocity = 30m/s
Unknown:
Time taken for the body to slow down = ?
Solution:
Acceleration is the rate of change of velocity ;
Acceleration =
time =
Now insert the parameters and solve;
time = = 2s
Anymore it would be technical logically