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Ch 17: Vocabulary: Definitions and Sentences

CH. 17 SPECIFIC HEAT WORKSHEET

1) How much energy, in J and kJ, is required to raise the temperature of 123.4g of aluminum metal from 3.0 ^oC to 31.6 ^oC? c_Al= 0.900 J/g ^oC

2) How much energy is released when 44.6g of lithium metal is cooled from 82.2^oC to 23.0 ^oC? Answer in both J and kJ. C_Li = 3.556 J/g^oC

3) How much energy, in J and kJ, is required to raise the temperature of 2.03g of mercury metal from 8.1 ^oC to 77.4 ^oC? c_Hg=0.138 J/g^oC

4) How much energy, in J and kJ, is released when 890.6 g of iron metal is cooled from 456 ^oC to 22 ^oC? c_Fe = 0.444 J/g^oC

5) What increase in temperature will result if 212.0g of copper absorbs 4.08kJ of heat energy? C_Cu = 0.385 J/g^oC

6) A 83.7g sample of nickel absorbs 483 J of energy when the temperature increases from 13.8 ^oC to 26.8 ^oC. What is the specific heat of nickel?

7) Given that the specific heat of water is 4.184 J/g^oC find the amount of energy in joules required to raise the temperature of 35.2 g of water from 27.2°C to 31.5°C.

8) Given that the specific heat of water is 4.184 J/g^oC find the amount of energy in joules required to raise the temperature of 9.4 g of water from 26.3°C to 29.1°C.

9) Given that the specific heat of water is 4.184 J/g^oC find the amount of energy in joules required to raise the temperature of 17.1 g of water from 29.4°C to 35.8°C.

10) Given that the specific heat of water is 4.184 J/g^oC find the amount of energy in joules required to raise the temperature of 24.8 g of water from 28.8°C to 31.9°C.

11) Given that the specific heat of water is 4.184 J/g^oC find the amount of energy in joules required to raise the temperature of 3.1 g of water from 26.9°C to 30.7°C.

12) What is the specific heat of a substance that absorbs 2.5 x 10³ joules of heat when a sample of 1.0 x 10⁴ g of the substance increases in temperature from 10.0C to 70.0C?

13) A 1.0 kg sample of metal with a specific heat of 0.50 KJ/Kg^oC is heated to 100.0C and then placed in a 50.0 g sample of water at 20.0C. What is the final temperature of the metal and the water?

14) A 2.8 kg sample of a metal with a specific heat of 0.43KJ/Kg^oC is heated to 100.0C then placed in a 50.0 g sample of water at 30.0C. What is the final temperature of the metal and the water?

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NECESSARY INFORMATION/LINKS:

CHEMISTRY COURSE OUTLINE SPRING, 2009.

Weeks 1-11

Jan    27   09   TUE        Chemical Reactions, Ch 11

Jan    28   09   WED      Ch 11: 1-6, 11-13,15,17,18,21,43,52,81**

Feb   05   09   THR      Lab #2 Types of Chemical Reactions

Feb   05   09   THR       TEST, Ch 11

Feb   06   09   FRI         Stoichiometry, Ch 12.

Feb 09   09   MON      Lincoln’s Birthday

Feb   10   09   TUE        Ch 12: 5-8, 10,13-15,17,24,25,40,44,59,82.

Feb   12   09   THUR      Lab #3 Mass/Mass Stoichiometry

Feb   16   09   MON      Presidents Day

Feb   20   09   FRI         TEST, Ch 12

Feb   23    09   MON      States of Matter, Ch 13

Feb 24   09   TUE        Ch 13: 1,3-6,8,11-13,15,16,56

Mar 02 09    MON        MINI TEST, CH 13

Mar 03 09   TUE      The Behavior of Gases, Ch 14.

Mar 03   09   TUE        Ch 14: 1, 5, 7-14, 36, 49, 62

Mar 05   09   THR      Lab # 4 Mass/volume.

Mar 11 09   WED      TEST, Ch 14

Mar 11   09   WED      Lab # 5 Graham’s Law

Mar 13   09   FRI         Water and Solutions, Ch 15-16.

Mar 16   09   MON      Ch 15: 1, 8, 9, 16, 17, 33

Mar 17   09   TUE        Ch 16: 3, 5, 8-11, 13, 15, 23, 24, 29, 63b, 64a, 85

Mar 19   09   THR      Lab #6 Solubility of KNO₃

Mar 19   09   MON      MINI TEST, Ch 15-16

Mar 24   09   TUE        Review for Benchmark Test/Final.

Mar 25   09   WED      District Benchmark Test Ch 11-16.

Mar 26   09   THR       Lab #7 Colligative Properties aka ice cream

Mar 27   09   FRI         Thermochemistry, Ch 17

Mar 30   09   MON      Ch 17: 1-3, 5, 6, 10, 15, 19, 22, 24, 30, 31

Apr   02   09  THR     Lab #8 Heat of vaporization and fusion

Apr   10   09   FRI         TEST CH 17

Apr   13-17     09           Spring Break…

** HOMEWORK ASSIGNMENTS: The homework assignment and worksheet(s) are due on the day of the chapter test or as instructed by your teacher.

CH. 17 SPECIFIC HEAT WORKSHEET

12) What is the specific heat of a substance that absorbs 2.5 x 103 joules of heat when a sample of 1.0 x 104 g of the substance increases in temperature from 10.0C to 70.0C?

13) A 1.0 kg sample of metal with a specific heat of 0.50 KJ/Kg oC is heated to 100.0C and then placed in a 50.0 g sample of water at 20.0C. What is the final temperature of the metal and the water?

14) A 2.8 kg sample of a metal with a specific heat of 0.43KJ/Kg oC is heated to 100.0C then placed in a 50.0 g sample of water at 30.0C. What is the final temperature of the metal and the water?

12) What is the specific heat of a substance that absorbs 2.5 x 10³ joules of heat when a sample of 1.0 x 10⁴ g of the substance increases in temperature from 10.0C to 70.0C?

13) A 1.0 kg sample of metal with a specific heat of 0.50 KJ/Kg^oC is heated to 100.0C and then placed in a 50.0 g sample of water at 20.0C. What is the final temperature of the metal and the water?

14) A 2.8 kg sample of a metal with a specific heat of 0.43KJ/Kg^oC is heated to 100.0C then placed in a 50.0 g sample of water at 30.0C. What is the final temperature of the metal and the water?