In a heat treatment of a specific excavator bucket tooth of 15kg mass, the tooth is...

In a heat treatment of a specific excavator bucket tooth of 15kg mass, the tooth is heated to 885⁰C and to achieve the required level of physical properties it needs to be cooled to the final temperature in a cooling tank using brine as the cooling medium. Determine the final temperature if the minimum required mass of brine initially at 20⁰C temperature is 260 kg, using specific heat values c_b= 3.71 J/g·K and c_s=0.47 J/g·K for brine and steel respectively. Assume no heat losses to the environment.

Expert Solution

samet mamat answered 2 years ago

the specific heat of copper (0.092) and the specific heat of silver is (0.056). The mass...

the specific heat of copper (0.092) and the specific heat of silver is (0.056). The mass of silver is 1.02 times greater than the mass of the copper. The heat gained by the silver is 1.33 times the heat gained by copper. The temperature change of copper is 20 degrees Celsius. What is the temperature change of the silver?

If the heat of combustion for a specific compound is -1270.0 kJ/mol and its molar mass...

If the heat of combustion for a specific compound is -1270.0 kJ/mol and its molar mass is 27.33 g/mol, how many grams of this compound must you burn to release 200.00 kJ of heat?

A glass plate has a mass of 0.50 kg and a specific heat capacity of 840...

A glass plate has a mass of 0.50 kg and a specific heat capacity of 840 J/(kg·C°). The wavelength of infrared light is 6 × 10-5 m, while the wavelength of blue light is 4.7 × 10-7 m. Find the number of infrared photons and the number of blue photons needed to raise the temperature of the glass plate by 2.0 °C, assuming that all the photons are absorbed by the glass.

A chunk of brass with mass 0.6 kg, with specific heat 380 J/(kg· K), and with...

A chunk of brass with mass 0.6 kg, with specific heat 380 J/(kg· K), and with temperature 400 K is placed in 0.6 kg of water, with specific heat 4186 J/(kg· K), and with temperature 280 K. The water and the brass are in an insulated container and come to thermal equilibrium. Find the final temperature in kelvins (closest answer). AND The asteroid Oumuamua observed this year in November traveled around the sun at a speed of 87,500 m/s. Its...

Using the vlues for the heat of fusion, specific heat of water, and/or heat of vaporization,...

Using the vlues for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following: A) Kilocalories needed to melt a 525g ice sculpture at 0 degrees C and to warm the liquid to 15.o degrees C. B) Kilojoules released when 85.0g of steam condenses at 100 degrees C, cools ad freezes at 0 degrees C. Please show the formula and how so I can understand. For some...

Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization,...

Using the values for the heat of fusion, specific heat of water, and/or heat of vaporization, calculate the amount of heat energy in each of the following: A. Joules released when 125g of steam at 100 C condenses and cools to liquid at 15.0 C. B. Kilocalories needed to melt a 525-g ice sculpture at 0 C and to warm the liquid to 15.0 C C. Kilojoules released when 85.0 g of steam condenses at 100 C, cools, and freezes...

A rocket turbine is driven by gases having specific heat ratio of 1.3 and specific heat...

A rocket turbine is driven by gases having specific heat ratio of 1.3 and specific heat of 1070 J/kg-K. The turbine entry stagnation conditions are 810 K and 2 MPa. If the discharge pressure from the turbine is 0.14 MPa, calculate its specific work. hts = 0.70. {Ans.: 2.78 (105) J/kg}

A small bucket of water with mass of 2.5 kg is tied to a string with...

A small bucket of water with mass of 2.5 kg is tied to a string with a length 0.68 m, and swung in a vertical circle. The bucket travels at a constant speed 5.8 m/s. When the bucket is at the top of the circle, what is the tension in the string? Report your answer in SI units, rounded to two decimal places.

Heat Capacity Learning Goal: To understand the concepts of heat capacity, specific heat, and molar heat...

Heat Capacity Learning Goal: To understand the concepts of heat capacity, specific heat, and molar heat capacity. Heat capacity, C, is the amount of energy required to raise the temperature of a substance by exactly 1 degree Celsius. The energy needed to warm an object increases as the mass of that object increases. We see this in our everyday life. For example, we know that it takes much more energy to heat a large tank of water than a small...

A 3-kg mass of metal of specific heat = 0.1 kcal/kg°C at a temperature of 600°C...

A 3-kg mass of metal of specific heat = 0.1 kcal/kg°C at a temperature of 600°C is dropped into 1.0 kg water at 20°C. With no heat losses to the surroundings, determine the equilibrium temperature of the mixture, and if it is 100°C, calculate what mass of water is turned into steam at this temperature. Group of answer choices 100°C and 110 g of steam 100°C and 150 g of steam 100°C and 130 g of steam 100°C and 70...

Question