15. How much heat is needed to melt a 4 kg block of cheddar cheese initially...
15.
How much heat is needed to melt a 4 kg block of cheddar cheese initially at room temperature of 25 degrees C? (assume the melting point of cheddar cheese is 150 degrees C, the latent heat of fusion of cheese is 124 KJ/kg and the specific heat of cheddar cheese is 2.08 KJ/kg C) (in J)
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15.
How much heat is needed to melt a 4 kg block of cheddar cheese
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How much heat is needed to melt 17.50 kg of silver that is initially at 23...
How much heat is needed to melt 17.50 kg of silver that is initially at 23 ∘C? The melting point of silver is 961∘C, the heat of fusion is 88 kJ/kg, the specific heat is 230 J/kg⋅C∘. Express your answer to two significant figures and include the appropriate units. Q Q = nothingnothing SubmitRequest Answer
At 1 atm, how much energy is required to heat 0.0550 kg of ice at -22.0...
At 1 atm, how much energy is required to heat 0.0550 kg of ice at -22.0 °C to steam at 129.0 °C? STRATEGY 1. Calculate the energy needed for each temperature change or phase change individually. A. The energy needed to heat 0.0550 kg of ice from -22.0 C to its melting point. B. The energy needed to melt 0.0550 kg of ice at its melting point C. The energy needed to heat 0.0550 kg of liquid water from the...
What is the heat capacity of a 20.2-kg block of ice? The specific heat capacity of...
What is the heat capacity of a 20.2-kg block of ice? The specific heat capacity of ice is 2.10 kJ/kg K. kJ/K It takes 880 J to raise the temperature of 350 g of lead from 0°C to 20.0°C. What is the specific heat of lead? kJ/(kg K) A heating coil inside an electric kettle delivers 3.20 kW of electric power to the water in the kettle. How long will it take to raise the temperature of 0.390 kg of...
Determine the amount of energy needed to melt a 5.0 kg block of lead if it...
Determine the amount of energy needed to melt a 5.0 kg block of lead if it is heated from a temperature of 23.0 degrees Celsius. The melting point of lead is 327.5 degrees Celsius.
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.
A jeweler wants to melt a ring. Assume the ring is pure gold and has a...
A jeweler wants to melt a ring. Assume the ring is pure gold and has a mass of 37 grams and the initial temperature of the ring is 55 degrees C. How much energy is required to melt the ring? (Use the attached table for needed constants) Multiple Choice A) 7,184.29 B) 2,522.29 C) J 4,853.29 J D) 2,331 J special heat capacity (J/kg C) : 130 Melting point (degree C) : 1064 heat of fusion (J/kg) : 134,000
how much heat is needed to heat 100g of water initially at room temperature (20 degrees...
how much heat is needed to heat 100g of water initially at room temperature (20 degrees C) to a final temperature of 70 degrees C. The specific heat of water is 1.p cal/g×degrees C.
How much heat is required to boil away 1.10 kg of water that is initially at...
How much heat is required to boil away 1.10 kg of water that is initially at 100 degree C? Latent heat 22.6 times 10^5 J/Kg, specific heat 4186 J/(Kg degree C). a) 2.49 times 10^3 KJ b) 3.49 times 10^6 J c) -2.49 times 10^6 J d) -3.49 times 10^3 KJ
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The...
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? The specific heat for copper is 386 J/kg · K, the heat of fusion for copper is 205,000 J/kg, and its melting point is 1357 K. O 3.15 x 1011kg 4.73 x 105 kJ 3.15 x 108 kJ 5.62× 105 kJ Question 18...
1. How much heat is required at constant pressure to melt 1 mole of ice at...
1. How much heat is required at constant pressure to melt 1 mole of ice at -25 C to steam at 125° C? boiling point 100c melting point 0.000'C specific heat capacities are gas(steam) 2.08, liquid 4.184 solid (ice) 2.11. All in units of JigC AH(100°C) 40.7 kJ/mol AHu (0.000°C)-6.01 kJ/mol 2. Calculate AHrxn for the reaction: CH4(g)4 Cl2(g) -CC4(g) 4 HCl (g) + Use the following reactions and given AH's: CH4(g) AH =-74.6 kJ 2 H2(g) C(s) C(s)2 Cl2(g)...
At 1 atm, how much energy is required to heat 0.0550 kg of ice at -22.0 °C to steam at 129.0 °C? STRATEGY 1. Calculate the energy needed for each temperature change or phase change individually. A. The energy needed to heat 0.0550 kg of ice from -22.0 C to its melting point. B. The energy needed to melt 0.0550 kg of ice at its melting point C. The energy needed to heat 0.0550 kg of liquid water from the...
What is the heat capacity of a 20.2-kg block of ice? The specific heat capacity of ice is 2.10 kJ/kg K. kJ/K It takes 880 J to raise the temperature of 350 g of lead from 0°C to 20.0°C. What is the specific heat of lead? kJ/(kg K) A heating coil inside an electric kettle delivers 3.20 kW of electric power to the water in the kettle. How long will it take to raise the temperature of 0.390 kg of...
How much heat is required to boil away 1.10 kg of water that is initially at 100 degree C? Latent heat 22.6 times 10^5 J/Kg, specific heat 4186 J/(Kg degree C). a) 2.49 times 10^3 KJ b) 3.49 times 10^6 J c) -2.49 times 10^6 J d) -3.49 times 10^3 KJ
Question 17 3 pts A 771.0-kg copper bar is put into a smelter for melting. The initial temperature of the copper is 300.0 K. How much heat must the smelter produce to completely melt the copper bar? The specific heat for copper is 386 J/kg · K, the heat of fusion for copper is 205,000 J/kg, and its melting point is 1357 K. O 3.15 x 1011kg 4.73 x 105 kJ 3.15 x 108 kJ 5.62× 105 kJ Question 18...
1. How much heat is required at constant pressure to melt 1 mole of ice at -25 C to steam at 125° C? boiling point 100c melting point 0.000'C specific heat capacities are gas(steam) 2.08, liquid 4.184 solid (ice) 2.11. All in units of JigC AH(100°C) 40.7 kJ/mol AHu (0.000°C)-6.01 kJ/mol 2. Calculate AHrxn for the reaction: CH4(g)4 Cl2(g) -CC4(g) 4 HCl (g) + Use the following reactions and given AH's: CH4(g) AH =-74.6 kJ 2 H2(g) C(s) C(s)2 Cl2(g)...
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