What is the energy needed to melt 0.52 kg of gold? (Use: Lf of gold = 63 kJ / kg) ? a. 32760 J b. 32.76 J c. 0.64

Q: A 200. g copper can contains 150. g of oil at 20.0 °C. To the oil is added 80.0 g of aluminum block…

A: Given : mcu = 200 g Ti,cu = Ti,o = 20°C mo = 150 g mal = 80 g Ti,al = 300°C ρ = 2.7 g/cm3 α = 2.3 x…

Q: 7. Consider a material with a mass of 1.3 kg and a specific heat capacity of 1.7 J/kg°C. Compute for…

A:

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: 61.  A gas is held at a constant pressure with an initial volume and temperature of 50 mL and 127…

A:

Q: The specific heat of Al is 900 J/kg.C and its latent heat of fusion L,= 4.0 x 105 J/kg at 660 C. How…

A: In given question, some amount of heat will be required to raise the temperature of the solid…

Q: If you add 700 kJ of heat to 600 g of water at 60.0°C, how much water will be left in the container?…

A: Given: Heat added to mass of water, m=600 g  at temperature, T=60.0°C  The latent heat of…

Q: An apple loses 4.5 kJ of heat as it cools per degC drop in its temperature. The amount of heat loss…

A:

Q: 9. An insulated beaker with negligible mass contains 0.250 kg of water at a temperature of 75.0…

A:

Q: 1. A jeweler must melt 44.59 g of silver. Assume the silver starts at room temperature (20°C) and…

A: “Since you have posted multiple questions, we will provide the solution only to the first question…

Q: 8.00 g of ice at 0.0000 C is added to 240 mL of hot coffee at 90.00 C in a thermos. What is the…

A:

Q: An ideal gas that occupies 1.2m^3 at a pressure of 1 x 105 Pa and a temperature of 27C is compressed…

A: Given data:  An ideal gas  Initial volume (V1) = 1.2 m3 initial pressure (P1) = 1×105 Pa Initial…

Q: How much heat is required to raise the temperature from 30 °C to 300 °C of a iron skillet of mass…

A: Write the expression for the required heat. Here, m represents the mass, c represents the specific…

Q: An electric kettle was used to heat a 1kg of ice at freezing point. Determine the heat needed (kJ)…

A:

Q: 32. An Aluminum block (100 grams) is heated to 200 degree C and then is dropped into 300 grams of…

A: mass of aluminum block (ma)=100 gInitial temperature of block (Tib)=200°Cmass of water (mw)=300…

Q: Peter is heating water on the stove to boil eggs for a picnic. How much heat is required to raise…

A: Given, mass of the water, m = 10 kgtemperature of water, Ti = 20.0 °Ctemperature of water, Tf =…

Q: 2. What is the internal energy for the following cases? a. q = +52 k, w = -15 kJ b. q = 100 kJ, w…

A: From First Law of Thermodynamics ∆U=Q-W∆U : change in internal energyQ: heat addedW: work done by…

Q: 56. A chunk of steel with a mass of 1.57 kg absorbs net thermal energy of 2.5 x 105 J and rises its…

A: The mass of the steel is given as, m=1.57 kg, The net thermal energy absorbed by the steel is given…

Q: 45.How much heat is necessary to raise the temperature of 1.80 kg of ethyl alcohol from 25°C to its…

A: heat required to raise the temperature is given as Q=M s∆T here m is mass of sample s is specific…

Q: In an industrial factory, four different materials are heated up for the same temperature difference…

A: Specific heat capacity is the amount of heat required to change the heat content of 1 gram of…

Q: The mass of an object is 0.201 kg. The object requires 15.0 J of heat to raise its temperature by…

A:

Q: The temperature of water in a swimming pool decreases by 5.0 K during the night. The mass of the…

A: Given, The temperature of water decreases by 5 k mass of water in the pool is 560,000 kg specific…

Q: |29. What is the heat transfer when 3 kg water is change to vapor when latent heat of vaporization…

A: 3 kg water at 100°C is converting to 3kg vapour at 100°C  Laten heat of vaporization  Lv = 2.3×106…

Q: The temperature of 4 mole of an ideal gas is increased from 114 K to 524 K, and its given that C,=R.…

A: Given data: Number of moles, n=4.0 moles Initial temperature, T1=114 K Final temperature, T2=524 K

Q: 18. An air conditioner takes air from a room at 70 •F and transfers it to the outdoors, which is at…

A: Given data: The initial temperature is, T1= 70 oF = 294.26 K The final temperature is, T2 =95 oF =…

Q: 8. You are given a sample of metal (mass 2.9 kg) and asked to determine its specific heat. You…

A: Heat energy(Q) and  specific heat(s) are related by following formula Q = ms∆T Where m is mass and…

Q: Two blocks, m₁ = 1.0 kg and m₂ = 2.0 kg, are connected by a light string as shown in the figure. If…

A: Given data: The radius of the pulley is r=1.0 m The moment of inertia I=5.0 kg×m2 m1=1.0 kgm2=2.0 kg…

Q: 11. You are asked to design a cylindrical steel rod 0.50 m long, with a circular cross section, that…

A: Given,length of the rod, l = 0.50 mheat, H =Qt= 150.0 Jstemperature of the furnace, TH = 400…

Q: 2. Gain or loss of energy? write G or Lin the blank A. 1When water freezes. B. During sublimation.…

A: “Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: 5. A copper cylinder is initially at 20.0 °C. By how much should the temperature increase so that…

A:

Q: What is the specific heat of an 800g unknown substance whose temperature changes by 78◦C after…

A: Given data: Mass of substance is, m=800 g. Change in temperature is, ∆T=78∘C. Amount of heat…

Q: When lead is melted at atmospheric pressure, the melting point is 327.0 °C, the density decreases…

A: GivenP=41 atmρ1=1.101×104 kg/m3ρ2=1.065×104 kg/m3L=24.5 kJ/kgUsing clausius -clapeyron…

Q: A 26.0-kg sample of ice is at 0.00°C. How much heat is needed to melt it? For water Lf = 334 kJ/kg…

A: Given data: Mass of ice (m) = 26 kg Initial temperature = 0.00°C Lf = 334 kJ/kg Need to determine…

Q: 16. Given that 635 K equals to 362°C, then 902 K equals to? a. 514°C. b. 629°C. c. 650°C. d. 1…

A: according to question we need to find correct option.

Q: What is the specific heat at constant pressure for N, gas? Assume that N, is an ideal gas. а. 3R/2…

A:

Q: Specific heat of an unknown substance is given as 0.86 cal/g°C.

A: The correct option is D. 3600

Energy transfer

The flow of energy from one region to another region is referred to as energy transfer. Since energy is quantitative; it must be transferred to a body or a material to work or to heat the system.

Molar Specific Heat

Heat capacity is the amount of heat energy absorbed or released by a chemical substance per the change in temperature of that substance. The change in heat is also called enthalpy. The SI unit of heat capacity is Joules per Kelvin, which is (J K-1) 

Thermal Properties of Matter

Thermal energy is described as one of the form of heat energy which flows from one body of higher temperature to the other with the lower temperature when these two bodies are placed in contact to each other. Heat is described as the form of energy which is transferred between the two systems or in between the systems and their surrounding by the virtue of difference in temperature. Calorimetry is that branch of science which helps in measuring the changes which are taking place in the heat energy of a given body.