Which of the following cases (if any) requires the greatest amount of heat? In each case, the material is the same. 0.5 kg of the material is to be heated by 20 C 0.15 kg of the material is to be heated by 10 C 2.0 kg of the material is to be heated by 4.5 C 1.0 kg of the material is to be heated by 8.0 C

Q: Two bars of identical mass are at 29 °C. One is made from glass and the other from another…

A: Given Data:- Initial temperature of each bar is ti=29.0°C Final temperature of the glass bar is…

Q: A change of 20 degrees Celsius is the same as a change of ________ Kelvin.

A: Given: The change in temperature on Celsius scale is 20oC.

Q: When 12.27 grams of ice at - 20°C have absorbed 2500 calories of heat, what is the temperature of…

A: Given:-             mass of ice = 12.27 g      Ice temperature = -20° C total heat absorbed = 2500…

Q: Knowing that 1 cal = 4.182 J, determine the specific heats of the following substances in cal/gK.…

A:

Q: Determine the specific heat capacity of the metal.

A: The metal’s specific heat capacity can be determined by the calorimetry principle as, Here, Q, m,…

Q: How many calories of heat does it take to change the temperature of 211.7 g of ice from -45.4°C to…

A: Ans:- Image-1

Q: Water has a specific heat of 4.2 kJ/kg degrees C. A stockpot filled with 4.8 kg of water is placed…

A: Given, Power output, P=1.9 kW Specific heat , CV=4.2 kJkg°C mass of water, mW=4.8 kg Initial…

Q: SOLIDS Material Aluminum Brass Copper Glass Gold Ice. Iron Specific heat (J/kg-K) 921 Lead Nickel…

A: Given data: The mass of the hammer, m=1.5 kg The mass of the brass nail m=12 g=0.012 kg The speed of…

Q: What is the definition of the latent heat of vaporization? The amount of heat energy required to…

A: option B is correct

Q: The formation of condensation on a glass of ice water causes the ice to melt faster than it would…

A:

Q: The number of kilocalories in food is determined by calorimetry techniques in which the food is…

A: The objective of the question is to calculate the energy content of a peanut in kilocalories per…

Q: An iron rod is in the shape of a horse shoe. The ends of the iron rod are at different temperatures.…

A: The rate of conductive heat transfer through a material is given by, ∆Q/∆t = kA∆T/d ilk is the…

Q: What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10^3 J of thermal…

A:

Q: Which one of the following scenarios causes Q to be negative? A placing ice cubes in a glass

A: an air conditioner pushing heat to the outside makes Q negative. Because heat is rejected from hot…

Q: The human body can cool itself by evaporation, usually in the form of sweat. Consider this cooling…

A: Given: Mass of woman m=63.5 kg, Temperature change ∆T=0.95°C, Specific heat of human body c=3500…

Q: The temperature of a gold bar rises by 10.0°C when it absorbs 0.677 kJ of energy by heat. The mass…

A: Given -               temp. of gold bar rises = ∆T = 10∘C                energy absorb = Q = 0.667…

Q: How much heat must be added to 8.74 kg of aluminum to change it form a solid at 130°C to a liquid at…

A: Given: The mass of aluminum is 8.74 kg.             The initial temperature 130°C.             The…

Q: A 425-g steel ball, with a specific heat capacity of 460 J/kg°C hits a wall at 27 m/s. If all the…

A:

Q: To sterilize a 49-g glass baby bottle, we must raise its temperature from 22.0°C to 95.0°C. - How…

A: Given data:  Mass (m) = 49 g = 0.049 kg Initial temperature (T0) = 22.0°C Final temperature (T) =…

Q: How much kilojoule (kJ) of heat is required to increase the temperature of a liquid from 13.2°C to…

A:

Q: 0.5 kg of a material requires 4000 J to raise its temperature by 2 °C, what is the specific heat…

A: Given data:  Mass (m) = 0.5 kg = 500 g Heat energy (Q) = 4000 J Raise in temperature (ΔT) = 2°C…

Q: A 0.5-kg block of a pure material is heated from 0°C to 93.75°C by the addition of 6 kJ of energy.…

A: GivenMass of water, m = 0.5 kg Energy of the material = 6 KJ Initial temperature, T1=00C Final…

Q: 38.0-g of ice cubes at 0°C is added to 300-g of water at 25°C. What is the final equilibrium…

A:

Q: How much energy is needed to raise the temperature of 600 g of water from 25°C to 125°C?

A: Energy needed Q=Q25→100+Qwater→steam+Q100→125

Q: ass is 840 J/(kg. C°). When identical amounts of heat are supplied to each, the glass bar reaches a…

A:

Q: The same heat transfer into identical masses of different substances produces different temperature…

A: Mass of each substance m =1.5 kg The transferred heat Q = 1.5 kcal Initial temperature T1= 150C

Q: If 31.0 g of milk at a temperature of 3.95°C is added to a 250-g cup of coffee at a temperature…

A:

Q: A 1-kg block of sub-zero ice is dropped into a large drum of cold water at 0 C. The drum is…

A: This is a question regarding the heat required by an object to change its state. The heat required…

Human Metabolism

Being described as the most complicated machine ever encountered by humans, the human body and the cell metabolism is nothing less than a wonder. Metabolism is the set of life-sustaining chemical reactions within organisms.