You have 170.3 grams of solid silver at 961.8°C. You want to melt the silver to make silver salt-and-pepper shakers as a wedding gift. How much heat/energy (in units of calories) is needed to melt all of the silver? The melting point of silver is 961.8°C. The heat of fusion of silver is 26.5 calories / gram.
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You have 170.3 grams of solid silver at 961.8°C. You want to melt the silver to...
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
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
The enthalpy of fusion for methane (CH4) is 0.942kJ/mol. How much heat is required to melt 37.91g of solid methane at its melting point? Report your answer in units of kJ.
The specific heat of silver is 0.057 calories/gram°C. If 10.0 grams of silver were heated and the temperature of the sample changed by 20.0°C, how many calories of heat energy were absorbed by the sample? (A)3,508 calories (B)0.029 calories (C)11.4 calories (D)0.114 calories
A jeweler wants to melt a ring. Assume the ring is pure silver and has a mass of 33 grams and the initial temperature of the ring is 58 degrees C. How much energy is required to melt the ring? (Use the attached table for needed constants) a 2,913.9 J b 3,939.87 J c 9,767.67 J d 6,853.77 J
A jeweler wants to melt a ring. Assume the ring is pure silver and has a mass of 21 grams and the initial temperature of the ring is 54 degrees C. How much energy is required to melt the ring? (Use the attached table for needed constants) A. 4,380.81 J B. 6,235.11 J C. 2,526.51 J D. 1,854.3 J
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)
63. Use the following table of thermal physics specs. substance solid H20 liquid H2O solid gold liquid gold solid lead liquid lead 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 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...
Please help !!! the minimum amount of energy, in joules, required to completely melt. 112 g of silver initially at 10.0°c Did you note that the temperature did not change-this is just a melting problem? heat of fusion (the stuff melts) and the mass? How is the thermal energy related to the Additional Materials Section 18.4 Subnit Answer Save Progres Pracice Another Version Practice Another Version -11 points HRW10 18 P.031 My Not What mass of steam at 100°C must...
B. Calculation of Heat during phase change. A phase change is a physical process in which a substance goes from one phase to another. The temperature of a substance does not change as the substance goes from one phase to another. The heat of fusion (AHfus) is the amount of heat per gram (or per mole) required for a phase change that occurs at the melting point. The heat of vaporization, (Hvap) is the amount of heat per gram (or...