Lab 1 - Laboratory Techniques and Measurements (Chemistry)

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College Chemistry I – Chem. 1806

Lab Report 1 assignment

1. Complete the following tables by filling in the missing information. (10 points)

Data Table 1
Object	Length (cm)	Length (mm)	Length (m)
CD or DVD	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Spoon	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Fork	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 2
Water	Temperature (°C)	Temperature (°F)	Temperature (K)
Hot from tap	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Boiling	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Boiling for 5 minutes	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Cold from tap	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Ice water – 1 minute	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Ice water – 5 minutes	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 3
Object	Estimated mass (g)	Actual mass (g)	Actual mass (kg)
Pen or pencil	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
3 Pennies	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
1 Quarter	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
2 Quarters, 3 dimes	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
4 Dimes, 5 pennies	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
3 Quarters, 1 dime, 5 Pennies	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Key	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Key, 1 quarter, 4 pennies	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

2. 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? (2 points)

Click or tap here to enter text.

3. Complete the following data tables by filling in the missing information. (10 points)

Data Table 4
		Mass A	Mass B	Mass B – A
Liquid	Volume (mL)	Graduated cylinder (g)	Graduated cylinder with liquid (g)	Liquid (g)	Density (g/mL)	% Error
Water	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Isopropyl Alcohol	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 5
Object	Mass (g)	Length (cm)	Width (cm)	Height (cm)	Volume (cm3)	Density (g/cm3)
Magnet	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 6
Object	Mass (g)	Initial volume of graduated cylinder (mL)	Final volume of graduated cylinder (mL)	Object volume (mL)	Density (g/mL)
Magnet	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Metal bolt	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 7
Object	Mass (g)	Mass of displaced water (g)	Volume of displaced water (mL)	Density (g/mL)
Magnet	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.
Metal bolt	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

4. An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, 1.17 cm wide. If the mass is 21.3 g, what is the substance’s density (in grams per milliliter)? (2 points)

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5. Complete the following data tables by filling in the missing information. The final dilution in data table 9 equals the concentration from data table 8. (10 points)

Data Table 8
Chemical	Mass of volumetric flask	Mass of sugar (g)	Molar mass	Moles in volumetric flask	Total volume (mL)	Concentration (% m/v)
Sugar (C12H22O11)	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.

Data Table 9
Dilution	Volume (mL)	Mass (g)	Density (g/mL)	Initial Concentration (% m/v)	Volume transferred (mL)	Final concentration (% m/v)
0	25.0	Click or tap here to enter text.	Click or tap here to enter text.		0.0	Click or tap here to enter text.
1	25.0	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	2.5	Click or tap here to enter text.
2	25.0	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	4.5	Click or tap here to enter text.
3	25.0	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	3.0	Click or tap here to enter text.
4	25.0	Click or tap here to enter text.	Click or tap here to enter text.	Click or tap here to enter text.	6.0	Click or tap here to enter text.

6. Use the information provided in Data Table 9 to make the graph showing the relationship between density and concentration. Attach a copy of your graph to the end of this document. It should look similar to the graph below. (4 points)

7. From the graph above, what is the relationship between the concentration and the density of the sugar solution? (2 points)

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Density vs Concentration

0.92 0.092 0.018 0.0005 0.00085

Density (g/mL)

Concnetration (% m/v)