Charles's law is an experimental gas law that shows the relationship between the temperature of a gas and its corresponding volu
me. Based on the picture above, which model below correctly represents Charles's law?
1 answer:
Answer:
B. (Linear graph with positive slope)
Explanation:
The picture above showing that
1. T2 is higher than T1
2. V2 is higher than V2
From this, we can conclude that the relationship for temperature (T) and volume(V) is positive. That means a higher temperature will result in a higher volume.
Since the relationship positive, the graph will have a positive slope. We can't prove if the graph should be linear or exponential since we don't have the exact number of the experiment.
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<u>Answer:</u> The enthalpy of the reaction is 269.4 kJ/mol
<u>Explanation:</u>
To calculate the heat absorbed by the calorimeter, we use the equation:
where,
q = heat absorbed
c = heat capacity of calorimeter = 675 J/°C
= change in temperature =
Putting values in above equation, we get:
To calculate the heat absorbed by water, we use the equation:
where,
q = heat absorbed
m = mass of water = 925 g
c = heat capacity of water = 4.186 J/g°C
= change in temperature =
Putting values in above equation, we get:
Total heat absorbed =
Total heat absorbed =
To calculate the enthalpy change of the reaction, we use the equation:
where,
q = amount of heat absorbed = 134.7 kJ
n = number of moles of hydrocarbon = 0.500 moles
= enthalpy change of the reaction
Putting values in above equation, we get:
Hence, the enthalpy of the reaction is 269.4 kJ/mol