Here are the calculations for your data:
Your average value = (441 K + 444 K + 439 K + 445 K) / 4 = 442.25 K
Your percent error = |(442 K - 442.25 K) / 442 K| * 100% = 0.057%
And here are the calculations for your partner's data:
Your partner's average value = (445 K + 444 K + 445 K + 445 K) / 4 = 444.75 K
Your partner's percent error = |(442 K - 444.75 K) / 442 K| * 100% = 0.62%
Step-by-step explanation:
To calculate the average value, you add up all the values and then divide by the number of values. In your case, you had 4 measurements, so you added up the temperatures of each trial and divided by 4. This gives you the average value.
The percent error is calculated as the absolute value of the difference between the accepted value and the experimental value, divided by the accepted value, all multiplied by 100%. This gives you a percentage that represents how much the experimental value deviates from the accepted value. In your case, the accepted value is 442 K, and you obtained an average value of 442.25 K, so you calculated the percent error using these values.
For your partner's data, you performed the same calculations using their measurements to find their average value and percent error.
It is important to note that a low percent error indicates a close agreement between the experimental and accepted values. Both your percent error and your partner's percent error are relatively low, which suggests that your measurements are reasonably close to the accepted value of the melting point of pure paracetamol.
Note: The terms "average value" and "percent error" are important concepts in scientific measurements and data analysis. The average value represents a typical or central value obtained from a set of measurements, while the percent error quantifies the deviation of an experimental value from an accepted or theoretical value.