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MTY1102 – LABORATORY

PRACTICE EXERCISE 1

I.

Measurements

Report the readings for each apparatus given below. Provide the correct number of significant figures

and unit of measurement for each data.

1.

Buret (milliliters) 5. Ruler (millimeters)

22

23

22.7ml 359mm

2.

Triple Beam Balance (grams) 6. Graduated cylinder (milliliters)

367.3g 1ml

3.

Buret (milliliters) 7. Ruler (millimeters)

19

18

18.3ml 415mm

4.

Triple Beam Balance (grams) 8. Graduated cylinder (milliliters)

239.9g 6ml

MTY1108 - LABORATORY

20

30

40

50

60

6

7

8

9

10

2

1

20

30

40

50

60

7

6

6

7

8

9

10

100

200

300

400

500

30

40

50

60

70

100

200

300

400

500

30

40

50

60

70

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MTY1102 – LABORATORY

PRACTICE EXERCISE 1

II.

Problem Solving

Show all your computations. Express the final answer in correct number of significant figures. Encircle your

final answer.

1.

The masses of nine samples (in grams) of marbles are as follows: 2.890, 2.1654, 2.41, 2.398, 2.053, 2.1,

2.935, 2.48, and 2.116. Calculate the average mass of the marbles.

- : 2.890+ 2.1654+ 2.41+ 2.398+ 2.053+ 2.1+ 2.935+ 2.48+2.116

- =21.5474

- =21.5g

- =-21.9/9= 2.388888889

- 2.4g average mass of the marble

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MTY1108 - LABORATORY MTY1102 – LABORATORY PRACTICE EXERCISE 1 I. Measurements Report the readings for each apparatus given below. Provide the correct number of significant figures and unit of measurement for each data. 1. Buret (milliliters) 5. Ruler (millimeters) 22 20 30 40 50 60 23 22.7ml 359mm 2. Triple Beam Balance (grams) 6. Graduated cylinder (milliliters) 100 200 300 400 500 30 40 50 60 70 2 1 6 7 8 9 10 367.3g 1ml 3. Buret (milliliters) 7. Ruler (millimeters) 19 20 30 40 50 18 18.3ml 415mm 4. Triple Beam Balance (grams) 8. Graduated cylinder (milliliters) 100 200 300 400 500 30 40 50 60 70 7 6 6 7 8 239.9g 9 10 6ml 60 MTY1102 – LABORATORY PRACTICE EXERCISE 1 II. Problem Solving Show all your computations. Express the final answer in correct number of significant figures. Encircle your final answer. 1. The masses of nine samples (in grams) of marbles are as follows: 2.890, 2.1654, 2.41, 2.398, 2.053, 2.1, 2.935, 2.48, and 2.116. Calculate the average mass of the marbles. - : 2.890+ 2.1654+ 2.41+ 2.398+ 2.053+ 2.1+ 2.935+ 2.48+2.116 - =21.5474 - =21.5g - =-21.9/9= 2.388888889 - 2.4g average mass of the marble MTY1108 - LABORATORY MTY1102 – LABORATORY PRACTICE EXERCISE 1 2. A 15.313 g solid sample was placed in a graduated cylinder containing 50.0 mL of water. The volume reading on the cylinder increased to 59.1 mL. What is the density of the solid sample? - 59.1ml – 50.0ml = 9.1ml 15.3 ...
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