Chemistry*Temperature&SpecificHeat*Worksheet*Answer Key ! ... Specific!Heat!Calculations!! ... Chemistry Temperature and Specific Heat Worksheet Answe...
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Chemistry Temperature & Specific Heat Worksheet Answer Key Temperature Conversions 1. Complete the table below:
2
3
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Units of Energy Conversions Use conversion factors and dimensional analysis to answer these problems. 1 calorie = 4.184 joules. 5. A person uses 550 kcal of energy to run a race. Convert the energy used for the race to the following energy units:
6. Convert each of the following energy units:
7. Convert each of the following energy units:
8.
9. It takes 4184 J of energy to raise the temperature of 1.000 kg of water 1.000 °C. a. How many joules does it take to raise the temperature of 1.50 kg of water 1.00 °C?
4184 𝐽 ×1.50 𝑘𝑔×1.00℃ = 6276 𝐽 → 𝟔𝟐𝟖𝟎 𝑱 3 𝑠. 𝑓. (1.000𝑘𝑔)(1.000℃) b. How many calories does it take to raise the temperature of 1.0 kg of water 15.5 °C?
4184 𝐽 1 𝑐𝑎𝑙 × ×1.0 𝑘𝑔×15.5℃ = 15500 𝑐𝑎𝑙 → 𝟏𝟔𝟎𝟎𝟎 𝒄𝒂𝒍 2 𝑠. 𝑓. (1.000𝑘𝑔)(1.000℃) 4.184 𝐽 Specific Heat Calculations 10. Water has a specific heat of 4.184 J/g·∙°C. a. How much energy must be added to 1450 g of water to raise the temperature from 5.5 °C to 29.0 °C?
b. How much energy is removed from 10.55 kg of water to lower the temperature from 22.5°C to 3.0°C? c. Adding 550 calories of energy raised the temperature of water from 10.0 °C to 13.25 °C. What was the mass of the water?
11. Iron has a specific heat of 0.45 J/g·∙°C. a. How much energy must be added to 376 g of iron to raise the temperature from 25.5 °C to 429.0°C? b. Removing 9550 kcal of energy lowered the temperature of iron from 100.0 °C to 73.25 °C. What was the mass of the iron?
c.
12. Steam has a specific heat of 1.90 J/g·∙°C. a. How much energy must be added to 125 kg of steam to raise the temperature from 105.5 °C to 129.0°C?
b. How much energy must be removed from 1520 g of steam to lower the temperature from 202.5°C to 100.0 °C?
c. 109 kJ of energy was added to 2.50 kg of steam. If the steam was originally at 100.0°C what was the final temperature of the steam?
13. What is the specific heat of a substance if 525 calories of energy increases the temperature of 10.0 g of the substance 5.75°C?
14. What is the specific heat of a substance if removing 95.0 J of energy decreases the temperature of 5.0 g of the substance from 23.5°C to 18.1°C?
