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Given the data and graph answer the following questions: 1.) What is the freezin

ID: 568856 • Letter: G

Question

Given the data and graph answer the following questions:

1.) What is the freezing point of the solution?

2.) What is the average freezing point of the solution?

3.) What is delta t in degrees c?

4.) What is the molality of the unknown?

5.) What is the molar mass of the unknown?

Temp (c)

Time (sec)

2.0

0

2.0

30

3.5

60

6.0

90

7.0

120

8.5

150

10.0

180

11.0

210

11.5

240

12.5

270

Temp (c)

Time (sec)

2.0

0

2.0

30

3.5

60

6.0

90

7.0

120

8.5

150

10.0

180

11.0

210

11.5

240

12.5

270

co Temperature () O 2012 Pearson Education, Inc

Explanation / Answer

if the inial state is solid then 2 degree celcius is the freezing point because it doesn't change wrt time as it was absorbing latent heat during that time.

Avg freezing time is 2 degree celcius.

delta t = 12.5 - 2 = 10.5 degree celcius

molarity or molar mass can't be obtained by merely seeing this graph.

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