A fresh hot cup of coffee is 80.4°C and the room temperature is 20.2°C.  After 5 minutes, the temperature of the coffee is 73.8°C.  How long, in minutes, will it take for the coffee to be a reasonable drinking temperature

Q: A food product containing 85% moisture content is being frozen. Estimate the specific heat of the…

A: Given data: Temperature of food product = -100C Moisture content in the food product = 85 % Specific…

Q: A student living in a 4m x 6m x 6m dormitory room turns on her 150-W fan before she leaves the room…

A: The initial temperature of the room was 15°C, but the room was isolated so as the time passes, the…

Q: Q5- Air at 27°C and 1 atm flows over a flat plate at a speed of 2 m/s. The viscosity of air at 27°C…

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Q: If 2 tons of frozen guava juice (-20 0C) will be thawed by heating it to boiling point and…

A: Given:- mass of frozen juice=2000 kg       @ T1=-20 C∘boliing point of juice @ T2=100  C∘Heat…

Q: A food product containing 85% moisture content is being frozen. Estimate the specific heat of the…

A: Moisture content = 85%  specific heat of the product Cp =? water frozen => 80% specific heat of…

Q: In the laboratory a student finds that it takes 129 Joules to increase the temperature of 12.7 grams…

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Q: Calculate the log mean temperature difference using cooling water utility for the following: Thi =…

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Q: Ammonia's melting point is 196 K and its boiling point is 240 K. an experiment, 50.00 g ammonia was…

A: As for the given problem , the latent heat value aren't provided , the values are obtained from…

Q: 2.4 A piston-cylinder device contains a mixture of 0.05 m³ of saturated liquid water and 0.8m³ of…

A:

Q: i) A 514g granite pan of specific heat 774 J/kg."C kept on a stove and 0.280 L water of specific…

A: Consider a granite pan of mass 514 g The specific heat of granite pan is Also 0.280 L of water is…

Q: A sample of gold weighing 227 grams is cooled then placed in a calorimeter containing 31 grams of…

A: Write the expression for heat of reaction as follows:Q = mCpTf-Ti      ......(1)

Q: A canister of pressurized gas has a mass of 10.0000 g. A small amount of gas is released and…

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Q: A 5 kg solid block is heated at a rate of 400 W by an oven. If the block is initially at 25°C, then…

A: In Chemical Engineering, heat transfer describes the flow of heat due to temperature differences and…

Q: QUESTION 4 A cup of coffee with cooling constant A-0.09 per minute is placed in a room at…

A: Given: Cooling constant k = -0.09 per minute Surrounding temperature Ts = 20 oC Serving temperature…

Q: 7. The specific heat of ethanol is 2.4 J/(g.°C). A 5 g of ethanol absorbs 550 J of heat, and the…

A: Specific heat of ethanol Cp = 2.4 J/g°c  Mass of ethanol m = 5 g  Heat absorbs Q = 550 J  Initial…

Q: A balloon at 25°C and including 350g benzene is heated with a, 40.2 W constant heat. The heat…

A:

Q: A food product containing 85% moisture content is being frozen. Estimate the specific heat of the…

A: Given: Moisture Content = 85% Final temperature = -4oC = 269K % of water frozen = 62% Cp water =…

Q: A food product containing 85% moisture content is being frozen. Estimate the specific heat of the…

A: Given data: Temperature of food product = -100C Moisture content in the food product = 85 % Specific…

Q: Q1) Water at 20 °Cand atmospheric pressure, calculate the heat added in these cases: 1- If the heat…

A: Given,  T = 20°C P = 1atm from steam table; Cp =4.18 KJ/Kg

Q: When M is 23.2 grams of the compound with a AH is 121 kJ/mole is burned in a calorimeter, Q is 28 kJ…

A: Given- Specific Enthalpy, ∆H = 121 KJ/mol Heat transferred, Q = 28 KJ Mass, m = 23.2 grams We need…

Q: One kg of steam with a quality of 35 percent is heated at a constant pressure of 1400 kPa until the…

A: Given that :m =1kg x =0.35 P =1400 KPaT = 1100 C

Q: Q1. The cooling water from the condenser of a power plant enters a wet cooling tower at (35° C) at a…

A: part you are looking for, so we are answering the first three subparts, please repost your question…

Q: A mercury thermometer, which has been on a table for some time, is registering the room temperature,…

A: Given that Ti=50 FTf =176 F at t=10 second

Q: Estimate the heat of vaporization of benzene and of toluene at 85 °C and at 105 °C using the highest…

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Q: The molecular weight of Carbone dioxide is CO, is 44 kg/ mol. In an experiment the value of y was…

A: All perfect gases are governed by the eqn, PV=nRT....................[1] where, P=Pressure of the…

Q: value of the constant,

A:

Q: The water is at the pressure of 0.22 bar and temperature of 60°C. a) Using data from the table,…

A: Given that- Water is present at, Pressure, P=0.22 bar Temperature, T=600C To perform the…

Q: (a) Assume that there is a negligible thermal gradient in the wall of the container (dT/dr is…

A: Consider a spherical conatiner is used to store reacting chemicals, whichresults in a uniform heat…

Q: A hot piece of metal is dropped into a beaker containing 100.0 ml of water, and the temperature of…

A: Given Data : Volume of water = 100 ml  Mass  of water (m) = 1000 Kg/m3×10-4 m3 = 0.1 Kg  Initial…

Q: 2. Using specific heat, calculate the change in internal energy (kJ) when 400 kmol of water at 150°C…

A: Given data to us Moles of water = 400 Hence,Weight of water = 400*18=7200g= 7.2Kg Specific heat…

Q: food product containing 80% moisture content is being frozen. Predict the specific heat of the…

A: Moisture content = 80 % specific heat of the dry product = 2.5 kJ / (kg ° C) Specific heat of…

Q: A student living in a 3.5m x 4m x 2.8m fourth bedroom turns on his 100W fan before leave the room on…

A:

Q: In winter, a canal in Canada has an ice layer on its surface. The depth from the surface to the…

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Q: When air is in a sealed container that is unchangeable and was heated from 20°C to 95°C, a) will the…

A: Asked to comment on work, heat, change in internal energy and change in enthalpy of the given…

Q: A food product with 85% moisture content is being frozen. Estimate the specific heat of the product…

A: Given: The percentage of frozen water in the product is Pf% = 82 %. The percentage of moisture…

Q: Estimate the heat of vaporization of diethyl either normal boiling point using troutons rule and…

A: Write the Trouton's rule as follows: ∆HvRTb = 10     ......1   We know, The gas constant, R = 8.314…

Q: Given the weight of the hot-air balloon to be 600 lb. If the heated air inside the balloon has a…

A: Let us assume; Fa= Buoyancy force acting Wa= Weight of hot air inside the ballon Wh = weight of…

Q: At 8:00 AM, the temperature reading outside the building is 540°R. After 3 minutes, the temperature…

A: To calculate the rate of heat loss of body we can consider Newtons law of cooling. According to this…

Principal Quantities and EOS

A physical quantity represents the physical state of a system. It is expressed as the product of a number and unit. The basic quantities used in science are length, mass, and time. The principal quantities are the quantities that are independent of other quantities.