How much heat is required to melt 30kg of ice at 0 °C to water at 10 °C? The latent heat of ice to water is 80 cal/g. The specific heat of water is 1 cal/g. °Ca) 0 kcal b) 2700 kcalc) 2400 kcal d) 1620 kcal

Q: 15. A O.100 kg copper sample is dropped from the roof of a 50.0 meter high building. If 50 % of…

A: The heat absorbed by the copper sample is given as, Here, m, cCu and ΔT represent the mass of…

Q: 14. Hot air at 80 C is blown over a 2m x 4m flat surface at 30 C. If the convection heat transfer…

A: Given, Initial temperature,Ti=80°C Final temperature,Tf=30°C Heat transfer coefficient, k=55Wm2.C…

Q: An ice bag containing 0°C ice is much more effective in absorbing heat than one containing the same…

A: Only specific heat is required to increase the temperature of water as no phase change is involved…

Q: A 50.0-g sample of a material at 80.0°C is dropped into a calorimeter containing 100.0 g of water at…

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Q: A 20 kg metal rod is heated 100oC with 2000 J of energy. What is the specific heat of the metal?

A: The heat is given  by  H = m c (T' - T)  where, m is the mass, c is the specific heat and T'  - T is…

Q: The thermal conductivity of ice is 5.2 x 104 kcal/m-s-C. At what rate is heat lost by the water in a…

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Q: A 0.0550 kg ice cube at −30.0°C is placed in 0.577 kg of 35.0°C water in a very well insulated…

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Q: A calorimeter made of copper (c=0.0923 cal/g-C°) of mass 300 g contains 450 grams of water. The…

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Q: A 0.03 kg lead bullet traveling 217 m/s strikes an armor plate and comes to stop. If all of the…

A: Kinetic energy of bullet will be given by following formula: K=12mv2 Here K is the kinetic energy ,…

Q: One way to cool a cup of coffee would be to plunge an ice-cold piece of aluminum into it. Suppose a…

A: The heat required for a material to change its temperature is given by Q = mc∆T, where m = the mass…

Q: how much heat would have to be added to 200 g of ice, initially at -10 oC to completely melt the…

A: Given data: The specific heat of ice is: CP =0.5 cal/g oC The mass of ice is: m= 200g The initial…

Q: .A 70Kg runner loses 0.5kg of water each hour through evaporation of perspiration in order to…

A: The problem is easy if use conservation of energy energy or we can say that calorimetry law that is…

Q: A 300g piece of iron at 200 deg Celcius is placed in a 100g aluminum cup containing 220g of liquid…

A: Given Data, Mass of the iron (mi)=300g Temperature of the iron=200 deg Celsius Final temperature=49…

Q: If the specific heat capacity of the ice is 0.5 cal/g Celsius, how much heat would have to be added…

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Q: 30 g of 80°C water is mixed with 100 g of 20 °C water. What is the final temperature after heat…

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Q: How much heat is required to convert (5gm) of ice at (-5C") to water at (50C") where specific heat…

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Q: How much heat (in cal) is needed to heat a container of water (with a mass of 5.5 kg) (specific heat…

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Q: Two 50-g ice cubes are placed into 0.2kg of water in a Styrofoam cup. The water is initially at a…

A: Given: The mass (m) of an ice cube is 50 g. The mass (M) of the water is 0.2 Kg. The initial…

Q: The temperature within the Earth’s crust increases about 1.0 C° for each 30 m of depth. The thermal…

A: The rate of heat conducted is given by the formula  Qt=kAdTdxChange in temperature per 1m depth…

Q: On a cold winter morning you step outside to get into your car and drive to work. Your car's…

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Q: 36 Suppose 72.3 J of heat are added to a 101-8 piece of aluminuma 20.5 °C. What is the final…

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Q: How much heat is needed to change the temperature of 215 grams of ice at -20 °C to liquid water at…

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Q: On a winter day the temperature drops from - 5 degrees * C to - 25 degrees * C overnight . If a pan…

A: The amount of heat required to change the temperature is Q=mcΔT

Q: How much heat in kilocalorie is necessary to change 20 kg of ice at - 10 degrees * C into water at…

A: Given :-  weight of ice 20kg = 20000 g . temp. of ice = - 10o c into water is 90o c specifc heat of…

Q: We have 39.5 g of a particular substance. Its specific heat in solid form is 0.8 J/(g K) and its…

A: The unit of temperature is not given. As the unit of Temperature used in specific heat is Kelvin.…

Q: How much heat must be removed from 800 g of water to cool it from 60 °c to 5 °c? a) 44 cal b) -44…

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Q: How much heat energy is required to raise 3.97 g of aluminum by 17.0 K? A. 0.23 J B. 73 J C. 62 J…

A: Given data :- mass of aluminum m = 3.97 g change in temperature ∆T = 17 K  = 17 °C

Q: 500ml of 60oC water at is added to a beaker. Water’s specific heat is 4.186 J/g °C.  You have 40ml…

A: Given: The amount of water is mw=500 ml, The amount of the unknown substance is mun=40 ml, The…

Q: 2. When hot coffee is poured into a cup, how much heat is lost from the coffee to the 200gm cup…

A: Given : Mass of a cup (m) = 200 gm  Specific heat of cup (c) = 0.2 cal/gm -°c Initial temperature…

Q: A 250.0 g china serving bowl is warmed 65 °C when it absorbs 3500 cal of heat from a serving of hot…

A: Given that  Mass of the bowl is m = 250 gm Amount of heat energy absorbed by the bowl is Q = 3500…

Q: How much water remains unfrozen after 61.8 kJ is transferred as heat from 489 g of liquid water…

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Q: What is the heat in calories required to raise the temperature of 0.05 kg of water from 0 degrees C…

A: Given data:  Mass (m) = 0.05 kg Initial temperature (Ti) = 0°C Final temperature (Tf) = 100°C…

Q: A 6.25 kg block ice at 0 degrees Celsius is being warmed on a glass stove top. The thermal…

A: The quantity of heat passing in time t is

Q: How much energy is required to change 2 kg of ice cube to steam. (Specific heat of water = 4200 J…

A: mass of ice cube = 2 kg specific heat of water = 4200 J kg-1C-1Latent heat of fusion = 334 kJ…

Q: 2. A glass of mass 100g, contains 150g of water at 30°C. When 70g of ice at 0°C is added to the…

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Q: A 0.0600-kg ice cube at -30.0°C is placed in 0.450 kg of 35.0°C water in a very well-insulated…

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Q: 6. A chunk of ice (T= -20 degree C) is added to a themally insulated container of cold wate =0…

A: Ice is at -20° celsius temperature and water is at 0° celsius temperature. when they are placed…

Q: The thermal conductivity of ice is 5.2 x 10^-4 kcal/m-s degrees Celsius. At what rate is heat lost…

A: Given, the thermal conductivity of ice is k = 5.2 x 10-4 kcal/m-s degrees Celsius. To find the rate…

Q: What amount of heat (in kJ) is required to convert 13.9 g of an unknown solid (MM = 67.44 g/mol) at…

A: Given values:- Mass of an unknown solid,(m)=67.44 g/mol ----(1) Initial temperature,(T1)=-15.4 0C…

Q: A copper calorimeter whose mass is 250 g contains 700 g of water at 250C. When 25 g of a certain…

A: Given data:      Mass, Mcu = 250 g       Mass, Mw = 700 g  @ 25°C       Mass, Mmetal = 25 g @ 98°C…

Q: 13. The latent heat of fusion for water is 33.5 3 104 J/kg, while the latent heat of vaporization is…

A: The mass of steam releases, ms=1.0 kg   The latent heat of vaporization, hv=22.6×105 J/kg   The…

Q: How much heat in kcal must be added to 0.66 kg of water at room temperature (20 degrees Celsius) to…

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Q: A0.5 kg ice cube at 0°C is placed in 1 kg of water at 35°C in a well - insulated container with…

A: Here, the heat loss by the water will be equal to the heat gain by the ice. mWsW∆T=miceL+micesW∆T

Q: 2kg of ice at 0 degree celsius are placed in a closed glass beaker( k = 0.80W/m-c). The closed…

A: Given data:  Mass of ice , m = 2 kg  Thermal conductivity of glass, k = 0.80 W/m-c  Surface Area of…

Q: f a substance is heated to 350 ∘C and then plunged into a 105-g aluminum calorimeter cup containing…

A: The mass of the substance msub= 235 g  The heating temperature Th = 350oC The mass of the aluminum…

Q: 25.0 kJ of heat is added to 52.0 g of ice at -10.0°C. What is the temperature of the water (in °C…

A: Given Mass m = 52 g = 52 × 10-3 kg  Specific heat of ice = 2.09 J/kg o C = 2.09 × 103 J/kg o C…

Q: 8. How many calories of heat are in 20.0 joules?   a. 83.7 calories   b. 4.78 calories…

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Calorimetry

Measuring the heat transferred during chemical reactions or other physical processes is known as calorimetry. It comes under the branch of thermochemistry.