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amandafutch24
27.02.2021 •
Chemistry
When 0.0801 mol of an unknown hydrocarbon is burned in a bomb calorimeter, the calorimeter increases in temperature by 2.19°C. If the heat capacity of the bomb calorimeter is 1.229 kJ/°C, what is the heat of combustion for the unknown hydrocarbon, in kJ/mol?
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Ответ:
S A T. NV
Explanation:
Ответ:
Option (A) is the correct answer.
Explanation:
Physical change is defined as a change that does not bring any changes in the chemical properties of a substance.
For example, solubility, density, volume etc are all physical changes.
When sugar dissolves in water then it is a physical change.
Whereas color change may not necessarily shows a physical change because a chemical change can also lead to color change of a solution or substance.
For example, rusting of iron is a chemical reaction in which color change also occurs.
Hence, we can conclude that a solid dissolves when added to a liquid is most clearly an example of a physical change.