Tohnya Carney College Chemistry Lab Results lab 2

# Tohnya Carney College Chemistry Lab Results lab 2 -...

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Copyright 2017 - Hands-On Learning | 1 / 13 Student Name Tohnya Carney Student ID 5883 Lesson Laboratory Techniques and Measurements Institution Iowa Lakes Community College Session Spring 2017 Course LP-2705-CK-01 Instructor Robert Klepper Final Report Exercise 1 Data Table 1: Length Measurements LP-2705-CK-01 Laboratory Techniques and Measurements Atmospheric pressure changes with the higher sea levels, decreasing the degree at which it takes water to boil. 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? Sample 1= 0.02 % error Sample 2= -0.008% error 2. While heating two dif f erent samples of water at sea level, one boils at 102°C and one boils at 99.2°C. Calculate the percent error f or each sample f rom the theoretical 100.0°C.

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Copyright 2017 - Hands-On Learning | 2 / 13 Data Table 2: Temperature Measurements Length (cm) CD or DVD Key Spoon Fork Length (mm) CD or DVD Key Spoon Fork Length (m) CD or DVD Key Spoon Fork 12 4.5 16 17.5 120 45 160 175 0.12 .045 .16 .175 Temperature (°C) Hot from Tap Boiling Boiling for 5 minutes 41 81
Copyright 2017 - Hands-On Learning | 3 / 13 Data Table 3: Mass Measurements Cold from Tap Ice Water - 1 minute Ice Water - 5 minutes Temperature (°F) Hot from Tap Boiling Boiling for 5 minutes Cold from Tap Ice Water - 1 minute Ice Water - 5 minutes Temperature (K) Hot from Tap Boiling Boiling for 5 minutes Cold from Tap Ice Water - 1 minute Ice Water - 5 minutes 104 10 0 -10 105.8 177.8 219.2 50 32 14 314.15 354.15 377.15 283.15 273.15 263.15

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Copyright 2017 - Hands-On Learning | 4 / 13 Estimated Mass (g) Pen or Pencil 3 Pennies 1 Quarter 2 Quarters, 3 Dimes 4 Dimes, 5 Pennies 3 Quarters, 1 Dime, 5 Pennies Key
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