Chm Lab lesson 2 paper
CHM130
Lab 2
Measurements: Accuracy and Precision A. Data Tables (36 points)
Place your completed data tables into your report here: (original Data
Data Table 1
Measurement
Original Data
Calculated Data
Length of aluminum plastic packet 5 cm 50 mm
Height of aluminum plastic packet 6.5 cm
65 mm
Temperature of faucet water 26 degrees C
78.8◦ f
Temperature of ice water 7 degrees C
44.6◦ f
Volume of water in 10-mL graduated cylinder 7.1 ml
0.0071000L
Volume of water in 50-mL graduated cylinder 7 mL
0.0070000L
Data Table 2
Measurement
Data
Calculated Data
Inside diameter of 50-mL graduated cylinder 5.5 cm
Height of 50-mL graduated cylinder 7.2 cm
Water temperature 23c
Initial volume of water in 50-mL graduated cylinder
10.0 mL
Mass of water in the 50-mL graduated cylinder (remember, 1 g of water weights 1 mL since its density is 1 g/mL) 10 grams
Volume of water and aluminum shot in 50-mL graduated cylinder 18 ml
Mass of aluminum shot (given on outside of packet) 19.9 g
B. Follow-Up Questions (Show all calculations)
Part I (Each question is worth 10 points.)
1. Convert the length and height measurements for the packet that contains the aluminum shot from units of cm to units of mm using the unit-factor method.
Cm is converted to mm using the equation mm= cm/0.10000. So, when you place the 5 or 6.5 cm measurement in the equation you get 5cm= 50 mm and 6.5cm = 65 mm.
2. Convert the temperature measurements for the faucet water and the ice water from oC to oF, using the following equation: oF = 1.8(oC) + 32.
Using the above equation, 26◦ c = 78.8◦ f and 7◦ c= 44.6◦ f
3. Convert the volumes of the water in the 10-mL and 50-mL graduated cylinders from mL to L, using the unit-factor method.
Using the equation to covert ml to l which is L= mL/1000, we find that 7.1 mL = 0.0071000L and 7ml = 0.0070000L
4. Looking at your measurements for the volumes
Lab 2
Measurements: Accuracy and Precision A. Data Tables (36 points)
Place your completed data tables into your report here: (original Data
Data Table 1
Measurement
Original Data
Calculated Data
Length of aluminum plastic packet 5 cm 50 mm
Height of aluminum plastic packet 6.5 cm
65 mm
Temperature of faucet water 26 degrees C
78.8◦ f
Temperature of ice water 7 degrees C
44.6◦ f
Volume of water in 10-mL graduated cylinder 7.1 ml
0.0071000L
Volume of water in 50-mL graduated cylinder 7 mL
0.0070000L
Data Table 2
Measurement
Data
Calculated Data
Inside diameter of 50-mL graduated cylinder 5.5 cm
Height of 50-mL graduated cylinder 7.2 cm
Water temperature 23c
Initial volume of water in 50-mL graduated cylinder
10.0 mL
Mass of water in the 50-mL graduated cylinder (remember, 1 g of water weights 1 mL since its density is 1 g/mL) 10 grams
Volume of water and aluminum shot in 50-mL graduated cylinder 18 ml
Mass of aluminum shot (given on outside of packet) 19.9 g
B. Follow-Up Questions (Show all calculations)
Part I (Each question is worth 10 points.)
1. Convert the length and height measurements for the packet that contains the aluminum shot from units of cm to units of mm using the unit-factor method.
Cm is converted to mm using the equation mm= cm/0.10000. So, when you place the 5 or 6.5 cm measurement in the equation you get 5cm= 50 mm and 6.5cm = 65 mm.
2. Convert the temperature measurements for the faucet water and the ice water from oC to oF, using the following equation: oF = 1.8(oC) + 32.
Using the above equation, 26◦ c = 78.8◦ f and 7◦ c= 44.6◦ f
3. Convert the volumes of the water in the 10-mL and 50-mL graduated cylinders from mL to L, using the unit-factor method.
Using the equation to covert ml to l which is L= mL/1000, we find that 7.1 mL = 0.0071000L and 7ml = 0.0070000L
4. Looking at your measurements for the volumes