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CHM 130IN A Laboratory Techniques and Measurements Worksheet

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Chemistry

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Pima Community College

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6/12/2020 Instance Chemistry 130IN A Laboratory Techniques and Measurements Final Report Copyright 2020 - Hands-On Labs | http://holscience.com Student Name Amal Koutaiba Mohammad Student ID 87320 Lesson Laboratory Techniques and Measurements Institution Pima Community College Session Summer 2020 Course Chemistry 130IN A Instructor Ann Condes Exercise 1 1. Water boils at 100°C at sea level. If the water in this experiment did not boil at 100°C, what could be the reason? It may not be at the sea level, the reason is water only boils at sea level that means if you move water to a different height the boiling temperature of the water would change. This due to the pressure drop at hight place, the drop of pressure would make it harder to transform water liquid to gas, thus requiring more temperature https://myhol.holscience.com/instances/10952#/experimentation/141204/final?pdf=true 1/16 6/12/2020 Instance 2. While heating two different samples of water at sea level, one boils at 102°C and one boils at 99.2°C. Calculate the percent error for each sample from the theoretical 100.0°C. The percentage error of sample 1 of water is 2 % and that of sample 2 is 0.8 % Explanation: To calculate the percentage error, we use the equation: The experimental value of temperature = 102°C The theoretical value of temperature = 100.0°C Putting values in equation 1, we get: The experimental value of temperature = 99.2°C The theoretical value of temperature = 100.0° ...
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