Q: The thermal energy of 0.900 mol of a substance is increased by 0.900 J.
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Q: Problem (1): 5.0 g of copper was heated from 20°C to 80°C. How much energy was used to heat Cu?…
A: Given data: Mass (m) = 5.0 g Initial temperature (T0) = 20°C Final temperature (T) = 80°C Specific…
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Q: What is the energy needed to melt 0.52 kg of gold? (Use: Lf of gold = 63 kJ/kg) Select one: a. 0.64…
A: Required The energy needed to melt gold.
Q: A 9.0-g lead bullet leaves the rifle at a temperature of 110ºC and hits a steel plate. If the…
A: Given data: Mass of lead bullet, m=9.0 g=9×10-3kg Temperature, T1=1100C=110+273.15=383.15 K Known…
Q: How much energy is needed to melt 2.00 kg if ice at 0 degrees Celsius
A: Given: Mass, m=2.00 kg To determine energy needed to melt 2.00 kg if ice at 0 degrees Celsius.
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A: The expression for area thermal expansion is written as, Here, Anew, Ao, α and ΔT represent the…
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Q: How much energy is necessary to heat 2.5 kg of water from room temp to its boiling point in kcal?
A: Given, Mass of water,m=2.5 kg Specific heat of water,c=1 kcal/kg-°C Initial temperature,T1=25°C…
Q: What is the heat capacity of water?
A: Specific heat, is the amount of heat required to change the heat content of exactly 1 gram of a…
Q: 2) 1000 J electrical energy was used to give heat energy of 250 cal. to 25 gm of water. The ratio…
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Q: The specific heat of germanium is 321 J/kgC. How much energy, in kilojoules, is required to raise…
A: Let s denotes the specific heat of germanium, m denotes the mass of germanium, ΔT denotes the…
Q: A quantity of steam (390 g) at 113 degrees Celsius is condensed, and the resulting water is frozen…
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Q: What is the energy needed to melt 0.68 kg of gold? (Use: Le of gold = 63 kJ/kg)
A: Given data: The mass of the gold is m=0.68 kg The latent heat of fusion of gold is Lf=64 kJ/kg
Q: How much heat is necessary to change 435 g of ice -8 degrees Celsius to water at 20 degrees Celsius?
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Q: 16. What is the amount of heat required to melt 100 g of ice completely at -10ºC? (5) (a) 6048 cal…
A: Heat required is given by: Q = Q1 + Q2 Q1 = Heat required from -10 C ice to 0 C ice = m*Ci*dT Q2 =…
Q: A 4 g sample of aluminum and a 4 g sample of copper are both at a temperature of 25°C. Aluminum has…
A: This problem is based on the Joules's law. Write the expression of heat. Q=mcTf-Ti
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A: The specific heat of water is very high, and the specific heat of sand is low.
Q: What is specific heat capacity of a monoatomic gas?
A: Monoatomic gas:Monoatomic gas is the gas which is composed of the molecules wh9ich consist of single…
Q: How much heat is required to melt a 3-kg iron? A.272,000 J B.300,000 J C.816,300 J
A: Given: Mass of iron, m = 3 kg. To Find: The amount of heat required for melting.
Q: What is the specific heat of a 5.1 -kg substance if 135j of heat is needed to raise the temperature…
A: Mass of the substance is m = 5.1 kg Heat required, Q = 135 J Difference in temperature is…
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Q: The heat of fusion of sodium metal is 2.6 kJ/mol. How much heat (in kilojoules) is required to melt…
A: The heat energy required to melt is calculated by using the formula Q=n∆Hf , where n=Mm is the…
Q: A 500 gram cube of lead is heated from 25 °C to 75 °C. How much energy was required to heat the…
A: Given: mass, m = 500 g = 0.5 kg T = 25 °C T'= 75 °C. c = 0.129 J/g°C = 129 J/ kg°C.
Q: Material Specific Heat (J/kg °C) water (pure) 4,184 aluminum 900 steel 470 silver 235 oil 1,900…
A: Given :- mass of aluminum piece (M) = 0.8 Kg increase in temperature (T) = 15oC specific heat of…
Q: What is the latent heat of fusion of a substance if it takes 4.5 x 10 4 J to melt 750 grams?
A: Given data: Energy energy (E) =4.5 × 104 J Mass (m) = 750 g = 0.750 kg Required: Latent heat of…
Q: A sample of lead has a mass of 0.45 kg (lead has a specific heat of 130 J/kgK). The sample is…
A: Consider the lead of mass m having specific heat capacity c and Ti and Tf are the initial and the…
Q: How much heat is required to change 1.2kg of lead from 15°c to 65°c temperature?
A: The given data are as follows: Mass of the lead, m = 1.2 kg or m = 1200 g Initial temperature, Ti =…
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Q: What is the unit of calorific value? A) kN/kg B) kJ/kg C) kW/sec D) kCal/sec
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Q: A 457.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is…
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Q: Brass is an alloy made from copper and zinc. A 0.59 kg brass sample at 98.0°C is dropped into 2.80…
A: Given Data: The mass of brass is: mb=0.59 kg The temperature of brass is: Tb=98.00°C The mass of…
Q: How much heat is necessary to change 300 g of water at 10°C into water at 90°C? a) 24 kcal b) 2.4…
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A: The solidus temperature is a temperature under which the ceramic compound or material will posses a…
Q: There is a .32 kg block of silver that is 21 °C. If silver's melting point is 961°C, how much…
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Q: How much heat is necessary to change 100g of ice at -20°C into water at 10°C? a) 2 Kcal b) 0.2 Kcal…
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Q: How much energy is required to completely melt 100 g of silver initially at 15.0oC?
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Q: What is the amount of heat it generates in a minute?
A: according to joules heat law. heat generated in conductor H = i2Rt where i = amount of current…
Q: of Solutions ► If 1.00 kJ of heat is absorbed by a 15.5 g ice cube at -5.00 °C, what will the final…
A: Given, heat absorbed, Q = 1 kJ = 1000 J mass of ice, m = 15.5 g initial temperature, Ti=-5 °C final…
Q: The Specific Heat Capacity of Lithium is 3.56 J / g C. What is this Specific Heat Capacity using…
A: Specific heat of lithium using calorie = 0.850 calorie per gram per centigrade
Q: 50 g of ice at 10°C is mixed with 70 g of water at 90°C, what will be the final temperature of a…
A: Let Tf be the mixture’s final temperature.
Q: How much ice is needed to cool 150 ml of water from 60oC to 40oC if it is in a copper cup weighing…
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what is the energy needed to melt 0.68km of gold?
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- What is the minimum amount of energy required to completely melt a 7.25kg lead brick which has a starting temperature of -18.0°C? The melting point of lead is 328°C. The specific heat capacity of lead is 128 J/kg.Cº. The latent heat of fusion of lead is 23200 J/kg. 1.20 x 10^5 J 4.56 x 10^5 J 4.89 x 10^5 J 2.88 x 10^5 JIn an annealing process-a process wherein materials such as glass and metal are heated to high temperatures and then cooled slowly to toughen them-the following equation may be used to determine the temperature of a thin piece of material after some time t. T-T 2h environment exp pcL T. initial environment where T = temperature (°C) h= heat transfer coefficient p= density (kg/m³) c= specific heat (J/kg - K) L= plate thickness (m) t = time (s) Those of you who will pursue aerospace, chemical, mechanical, or materials engineering will learn about the underlying concepts that lead to the solution in your heat-transfer class. What is the appropriate unit for h if the preceding equation is to be homogeneous in units? Show all steps of your work.314.0 kg copper bar is put into a smelter for melting. The initial temperature of the copper is 299.0 K. How much heat in kilojoules 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 kJ/kg, and its melting point is 1357 K.)
- There is a .32 kg block of silver that is 21 °C. If silver's melting point is 961°C, how much thermal energy would a scientist need to melt this block of silver? (Hf = 111 kJ/kg). Hf is the heat of fusion of silver! Solve, assuming that the specific heat of silver is .24 J/g*degC, or 235 J/kg*K.During a marathon race David uses energy at a rate of 272 W. What volume of body fluid does he lose in the 5.5 hours of the race if 21.0% of the energy goes to the muscle tissue and the rest is used in removing the perspiration from the body. The latent heat of vaporization is 2.41 106 J/kg at 37.0°C and density of water is 1000 kg/m3. Answer in cubic meters.A glass container has a total wall area (including the lid) of 1.75 m and a wall thickness of 1.5 cm. It's filled with 1000 g of ice at 0 C. How many seconds will it take to completely melt all the ice? (Latent heat of fusion is 80 cal/g and Thermal conductivity of glass is 0.8 W/m K) 120 s O 14, 400 s O 2, 800 s O 200 s QUESTION 6 A section of drainage culvert 1.23 m in length makes a howling noise when the wind blows. What is the 5th lowest natural frequencies of the culvert if it is blocked at one end? Temperature of air is 38 C. O 361 Hz O 721 Hz O 1298 Hz O 649 Hz
- The specific heat of a substance varies with temperature according to c = 0.24 + 0.47T+ 0.049T2, with Tin °C and c in cal/g-K. Find the energy required to raise the temperature of 7.9 g of this substance from 1.0°C to 11°C. Number UnitsThe world's deepest gold mine, which is located in South Africa, is over 5.3 km deep. Every day, the mine transfers enough energy by heat to the mine's cooling systems to melt 364320 kg of ice at 0.0 degrees Celsius. If the energy output from the mine is increased by 3.3 percent, to what final temperature will the 364320 kg of ice-cold water be heated? Latent Heat of fusion of Ice = 3.33 × 105 J/kg Specific heat capacity of Water = 4186J/(kg.°C)Lead is a soft, dense metal with melting point of 328°C, a heat of fusion of 5.5 kcal/kg, and a specific heat of 0.028 kcal/(kg.°C). How much total heat (in kcal) must be provided to melt a 1.93 kg sample of lead with an initial temperature of 46.2°C?
- The world’s deepest gold mine, which is located in South Africa, is over 3.2 km deep. Every day, the mine transfers enough energy by heat to the mine’s cooling systems to melt 362704 kg of ice at 0.0 degrees Celsius. If the energy output from the mine is increased by 4.9 percent, to what final temperature will the 362704 kg of ice-cold water be heated?When it rains, water vapor in the air condenses into liquid water, and energy is released. (a) How much energy is released when 0.0356 m (1.40 inch) of rain falls over an area of 2.59×106 m² (one square mile)? (b) If the average energy needed to heat one home for a year is 1.50x10¹1 J, how many homes could be heated for a year with the energy determined in part (a)? (a) Number i (b) Number 1 Units UnitsA compound is burned in a bomb calorimeter that contains 1.50 kg of water. If the combustion of 0.330 moles of the compound causes the temperature of water to raise 24.0 C, what is the molar heat of combustion of the compound? The specific heat of capacity of water is 4.184 J/(g C). The answer needs to be in kJ/mol and have 0 decimal places. Your Answer: Answer