A certain metal has a temperature of 80oC and is placed in a room with a temperature of 20oC. After 20 minutes, the temperature of the metal is now 50oC. How long will it take the metal to reach the 40oC m

Q: Lead pellets, each of mass 1.90 g, are heated to 200°C. How many pellets must be added to 492 g of…

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Q: A bowling ball at rest has a temperature of 23.0 °C. The ball is then rolled down a bowling alley.…

A: temperature of bowling ball when it is at rest = 23oC The dissipation of energy by friction and drag…

Q: A sample of neon gas (Ne, molar mass M = 20.2 g/mol) at a temperature of 13.0 °C is put into a steel…

A: The expression from heat transfer,

Q: The hot water for a house is heated using solar power. If the solar cells on the roof of the house…

A: Intensity of sunlight = 1000 Wm2Area of roof of the house (A) = 6 m2Volume of water = 1 m3We know,…

Q: A 175 g lump of molten lead at its melting point (327 C) is placed into 55.0 g of water at 20.0°C.…

A: There is a typo, the specific heat of lead should be 0.130 J/g.oC. Given(s): Mass of water, m1=55.0…

Q: 15.0 mL of distilled water at 8.0 C was mixed in a calorimeter with 25.0 mL of distilled water at…

A: Mass of the cold water  mc=15 g Change in temperature of the cold water ∆Tc=(17.50C- 80C) =9.50C…

Q: A 2m diameter disk made of brick fire 30cm thick is in contact with a 3m x 2m insulating brick wall…

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Q: A thermometer is removed from a room where the temperature is 70° F and is taken outside, where the…

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Q: In a thermometer, a 4.00 cm long column of mercury temperature changes from 25.0oC to 38oC. What is…

A: (given) Length (l) of mercury column = 4 cm = 0.04 m            Initial temperature (Ti) = 25°C…

Q: A 100 g aluminium calorimeter contains 250 g of water. The two substances are in thermal equilibrium…

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Q: An aluminum calorimeter of mass 50 g contains 200 g of ice and 500 g of water at 0℃. If 60 g of…

A: Given: The mass of the aluminium calorimeter is 50 g. The temperature of the ice is 0oC. The mass of…

Q: A weather balloon contains 12.0 m3 of hydrogen gas when the balloon is released from a location at…

A: Initial volume of the balloon (V1)=12 m3 Initial temperature (T1)=22 oC=295 K Initial pressure…

Q: A4 kg sample of mercury is completely solidified and liberates 104 kJ of energy. What is the…

A: The expression for the energy liberated is as follows: Q=mcΔT+mL               1

Q: A thermocouple was used to measure the temperature of a bucket of water. Multiple measurements were…

A: The temperature of a bucket of water are given as: Temperatures in °F:       72.4      73.1…

Q: What does the symbol 'a' (alpha) represent in the linear thermal expansion equation? A. It…

A: The linear thermal expansion equation is given by: ΔL=LαΔT We will explain the symbol α.

Q: 100 Pieces of copper each mass of it is (3gm) and was placed in a hot water and left until it…

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Q: A 50 g ice cube at 00C is heated until 45 g has become water at 1000C and 5 g has become steam at…

A: Given data : latent heat of fusion, Lf =333000J/kglatent heat of vaporization,…

Q: To treat a burn on his hand, a person decides to place an ice cube on the burned skin. The mass of…

A: Given The mass of the ice cube = 17.6 gms Initial temperature of the ice = - 12.6 0C The temperature…

Q: A room has dimensions of 7.2 m by 5.9 m by 3.2 m. The pressure inside the room is 90,000 Pa and the…

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Q: When the temperature of a metal cylinder is raised from 0.0°C to 78.3°C, its length increases by…

A: (a) Given that: The expression for the density is written as, Here, m and V represent the mass and…

Q: A 25.95 g sample of methanol at 35.60 °C is added to a 38.65 g sample of ethanol at 24.70 °C in a…

A: SOlution:

Q: After heating up in a teapot, a cup of hot water is poured at a temperature of 203∘203∘F. The cup…

A: Ta is the temperature surrounding the object = 203 FT0 is the initial temperature of the object = 69…

Q: A constant volume thermometer is at an initial temperature of 25°C and a pressure of 105 kPa. The…

A: Given that---T1 = 25 CP1 = 105 kPaP2 = 165 kPaQuestion ❓T2 = ?

Q: The oven’s temperature is 400 °F, what is the temperature of the cooked french fries inside?…

A: Given values: Oven temperature,Toven=400 °F Freezer's temperature, Tfreezer=-20 °C

Q: A 240.0 g china serving bowl is warmed 64.7°C when it absorbs 3.5 kcal of heat from a serving of hot…

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Q: Lead pellets, each of mass 1.00 g, are heated to 200°C. How many pellets must be added to 500 g of…

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Q: A box with a total surface area of 1.20 m and a wall thickness of 4.00 cm is made of an insulating…

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Q: The formula we used is V /T, and all the rows have the same answer of 0.091, this means; (Volume 1…

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Q: If both the volume and the pressure of a gas are doubled, how will the absolute temperature change?…

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Q: A 2m diameter disk made of brick fire 30cm thick is in contact with a 3m x 2m insulating brick wall…

A:

Q: 100 Pieces of copper each mass of it is (3gm) and was placed in a hot water and left until it…

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Q: When the temperature of a substance decreases, what happens to its molecules? Oa The molecules…

A: Temp. has significant effect on the Kinetic energy

Q: Provide the solution to the problem. The answer is provided already. To sterilize a 50.0-g glass…

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Q: A small metal bar, whose initial temperature was 20C is dropped into a large container of boiling…

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Q: A 31.5 g glass thermometer reads 23.6°C before it is placed in 135 mL of water. When the water and…

A: Given: The mass of the glass thermometer is 31.5 g. The temperature of the thermometer is 23.6°C.…

Q: A gas thermometer is used to measure the temperature of a boiling liquid. The thermometer is…

A: GIVEN: Pressure P1 =75 KPa            temperature T1 =134K             Pressure =P2 =50 KPa…

Q: How much energy would have to be added to 516grams of water to heat it from 14.0°C to 87.0°C?…

A: Given data:   Mass (m) = 561 g Initial temperature (Ti) = 14.0°C Final temperature (Tf) = 87.0°C…

Q: Solve the following problems systematically and show how you arrived at the final answer. 1.…

A: Given that, Mass of ice = 10.0 gram Initial temperature = 20°C Final temperature = 60°C Specific…

Q: A 2.5 L helium balloon is filled at a florist's shop. If the temperature inside the shop is 68°F,…

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Q: A 50.0-g piece of brass (specific heat 380 J/kg K) is heated to 90.0° C and immersed in 100 g of…

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Q: A storage tank has a volume of 3,000 liters [L] The tank is originally filled to a pressure of 21.1…

A: Given:  Storage volume→V=3000 L Initial pressure→Pi=21.1 MPa Initial temperature→Ti=28 °C Final…

Q: a resting person has skin temperature 35C if his room temperature is 30C and the body surface area…

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Q: A silver teaspoon at temperature 7⁰C is placed in a cup of hot coffee at temperature 93⁰C.  If the…

A: When two objects at a temperature difference are kept in touch then they exchange heat to reach an…

Q: mL cup of coffee is too hot to drink at 91C, so 100.0 mL of cold water at 6.5 C is added to cool it…

A: GivenVolume of coffee, Vc=450 mLTemperature of coffee, Tc=91°CVolume of cold water added, Vw=100…

Q: 255 g lead ball at a temperature of 81.8 degrees Celsius is placed in a light calorimeter containing…

A: Given: The mass of the lead is 225 g. The temperature of the lead ball is 81.8oC. The mass of the…

Q: The heating curve below shows the change in temperature of a 20 g sample of a substance as energy is…

A: Specific heat :                       Temperature of body changes but state remains same. So, change…

Q: A 12.48 g sample of an unknown metal, heated to 99.0 °C was then plunged into 50.0 mL of 25.0 °C…

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Q: A roasted turkey is taken from an oven when its temperature has reached 185 Fahrenheit and is placed…

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