QUESTION 2 A "big" Calorie (Cal) is a heat unit that is equal to the heat...
QUESTION 2 A "big" Calorie (Cal) is a heat unit that is equal to the heat required to raise the temperature of 1 g of water 1 C°. the heat needed to raise the temperature of 1 lb of water 1 F°. the food, or dietary, calorie. the heat of vaporization of 1 kg of pure water. 10 points
QUESTION 3
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The heat involved in the change of a solid into a liquid, or a liquid into a solid, at the melting point is called the
specific heat.
latent heat of fusion.
ice point heat.
thermodynamic convection.
Homework Answers
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QUESTION 2 A "big" Calorie (Cal) is a heat unit that is equal to
the heat...
The heat of vaporization of water is 540 cal/g, and the heat of fusion is 80...
The heat of vaporization of water is 540 cal/g, and the heat of fusion is 80 cal/g. The heat capacity of liquid water is 1 cal g−1 °C−1, and the heat capacity of ice is 0.5 cal g−1 °C−1. 18 g of ice at -6°C is heated until it becomes liquid water at 40°C. How much heat was required for this to occur?
Use the following table of thermal physics specs. Latent specific melting/freezing heat of substance heat point...
Use the following table of thermal physics specs. Latent specific melting/freezing heat of substance heat point (K) fusion (cal/g K) (cal/g) solid H2O 0.50 273 80 liquid H2O 1.00 273 80 solid gold 0.0301 1336 15 liquid gold 0.0355 1336 15 solid lead 0.0305 601 5.5 liquid lead 0.033 601 5.5 HEAT-MELT-HEAT CALCULATION (3 points) How much energy is required to convert 1.00 gram of solid gold at intial temperature T; = 1335 K to liquid gold at final temperature...
63. Use the following table of thermal physics specs. substance specific heat melting/freezing Latent heat of...
63.
Use the following table of thermal physics specs. substance specific heat melting/freezing Latent heat of (cal/g K) point (K) fusion (cal/g) 0.50 273 80 1.00 273 80 0.0301 1336 15 solid H2O liquid H20 solid gold liquid gold solid lead liquid lead 0.0355 1336 15 0.0305 601 5.5 0.033 601 5.5 HEAT-MELT-HEAT CALCULATION (3 points) How much energy is required to convert 1.00 gram of solid gold at intial temperature T; = 1335 K to liquid gold at final...
just #6 Thermochemistry, Part I, Calorimetry, Homework 7 Specific Heat Values: cal; Diamond(0.124), graphite(0.170), ice(0.50), steam(0.48),...
just #6
Thermochemistry, Part I, Calorimetry, Homework 7 Specific Heat Values: cal; Diamond(0.124), graphite(0.170), ice(0.50), steam(0.48), Al(0.215), Fe(0.108); S(0.176); liquidCCIF(0.208), gasCCI;F(0.142), liquidCF4(0.294), gasCF4(0.169), Heat of Fusion values: cal; water(80.0), Al(94.4), Heat of Vaporization values: Car; water(540.0), CC13F(43.10), CF4(32.49), Al(1992) 1. Draw the heating-cooling curve for phenol which has a melting point of 43 ºC and a boiling point of 182°C. 2. Draw the heating-cooling curve for Aluminum which has a melting point of 660 °C and a boiling point of...
8. Use the data in the Introduction calculate the total amount of heat in kcal required...
8. Use the data in the Introduction calculate the total amount of heat in kcal required to turn 100 g of ice at -20°C to steam at 120°C? liq gas equilibrium (heat goes into phase change) Steam - Water and steam allas (heat goes into temperature change) Temperature (°C) all liquid (heat goes into temperature change) -Water Ice and water all solid Nice solid/liq equilibrium (heat goes into phase change) - Time Heat On the 5 sections of the graph...
A total of 581 cal of heat is added to 5.00g ice at -20 C. What...
A total of 581 cal of heat is added to 5.00g ice at -20 C. What is the final temperature of the ice? Specific heat of H2O (SOLID) = 2.087 Specific heat of H2O (Liquid)= 4.184 Heat of fusion of H2O = 333.6J/g Hint: The total amount of energy needed is equal to the sum of heat needed to warm the ice to 0.0 C, melt the ice and warm the water to its final temperature
Calculate the heat required to raise the temperature of gm of ice at -25˚C to 70˚C....
Calculate the heat required to raise the temperature of gm of ice at -25˚C to 70˚C. (Ice has a specific heat of 2100 J/(kg K),the latent heat of fusion for ice is 334,000 J/kg, specific of water is 4186 J/(kg K) and Melting point of ice = 0˚C). Units are kJ.
Refer to this table of thermal properties of various substances. Substance specific heat (cal/g K) melting...
Refer to this table of thermal properties of various substances. Substance specific heat (cal/g K) melting point (K) Latent heat of fusion (cal/g) liquid H20 1.00 80 solid H20 0.50 273 80 gold 0.03 1337 15 silver 0.056 1235 26.5 aluminum 0.22 933 95 Which metal, ounce for ounce, is the hardest to heat up by 1.00 K? O silver O aluminum O gold
What mass of steam at 100°C must be mixed with 488 g of ice at its...
What mass of steam at 100°C must be mixed with 488 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 59.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent heat of vaporization is 2256 kJ/kg.
What mass of steam at 100°C must be mixed with 113 g of ice at its...
What mass of steam at 100°C must be mixed with 113 g of ice at its melting point, in a thermally insulated container, to produce liquid water at 58.0°C? The specific heat of water is 4186 J/kg·K. The latent heat of fusion is 333 kJ/kg, and the latent heat of vaporization is 2256 kJ/kg.
Use the following table of thermal physics specs. Latent specific melting/freezing heat of substance heat point (K) fusion (cal/g K) (cal/g) solid H2O 0.50 273 80 liquid H2O 1.00 273 80 solid gold 0.0301 1336 15 liquid gold 0.0355 1336 15 solid lead 0.0305 601 5.5 liquid lead 0.033 601 5.5 HEAT-MELT-HEAT CALCULATION (3 points) How much energy is required to convert 1.00 gram of solid gold at intial temperature T; = 1335 K to liquid gold at final temperature...
63.
Use the following table of thermal physics specs. substance specific heat melting/freezing Latent heat of (cal/g K) point (K) fusion (cal/g) 0.50 273 80 1.00 273 80 0.0301 1336 15 solid H2O liquid H20 solid gold liquid gold solid lead liquid lead 0.0355 1336 15 0.0305 601 5.5 0.033 601 5.5 HEAT-MELT-HEAT CALCULATION (3 points) How much energy is required to convert 1.00 gram of solid gold at intial temperature T; = 1335 K to liquid gold at final...
just #6
Thermochemistry, Part I, Calorimetry, Homework 7 Specific Heat Values: cal; Diamond(0.124), graphite(0.170), ice(0.50), steam(0.48), Al(0.215), Fe(0.108); S(0.176); liquidCCIF(0.208), gasCCI;F(0.142), liquidCF4(0.294), gasCF4(0.169), Heat of Fusion values: cal; water(80.0), Al(94.4), Heat of Vaporization values: Car; water(540.0), CC13F(43.10), CF4(32.49), Al(1992) 1. Draw the heating-cooling curve for phenol which has a melting point of 43 ºC and a boiling point of 182°C. 2. Draw the heating-cooling curve for Aluminum which has a melting point of 660 °C and a boiling point of...
8. Use the data in the Introduction calculate the total amount of heat in kcal required to turn 100 g of ice at -20°C to steam at 120°C? liq gas equilibrium (heat goes into phase change) Steam - Water and steam allas (heat goes into temperature change) Temperature (°C) all liquid (heat goes into temperature change) -Water Ice and water all solid Nice solid/liq equilibrium (heat goes into phase change) - Time Heat On the 5 sections of the graph...
Refer to this table of thermal properties of various substances. Substance specific heat (cal/g K) melting point (K) Latent heat of fusion (cal/g) liquid H20 1.00 80 solid H20 0.50 273 80 gold 0.03 1337 15 silver 0.056 1235 26.5 aluminum 0.22 933 95 Which metal, ounce for ounce, is the hardest to heat up by 1.00 K? O silver O aluminum O gold
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