Which of the following substances has the least average coefficient of linear thermal expansion?   Steel   Concrete   Copper   Tin

An insulated container is partly filled with oil. The lid of the container is removed, 0.150 kg of water heated to 84.0°C is poured in, and the lid is replaced. As the water and the oil reach equilibrium, the volume of the oil increases by 1.00x105 m³. The density of the oil is 919 kg/m³, its specific heat capacity is 1980 J/(kg-C°), and its coefficient of volume expansion is 726x10-6 (Cº)-¹. What is the temperature when the oil and the water reach equilibrium? Number Units

Two isolated systems with different temperatures are connected via long metal rod . The metal rod conducts heat between the two systems at a rate of 50 cals/s what will happen to the rate of the heat flow if the length of the metal rod is elongated 3 times the original distance as well as increasing the cross- sectional diameter by 3 times ? Round to one decimal place

1. (a) How much heat transfer is necessary to raise the temperature of a 0.26 -kg piece of ice from -20 °C to 130 °C, including the 20 kJ/s energy needed for phase changes? Specific heat of ice = 2.090 kJ/kg °C Specific heat of water = 4.186 kJ/kg °C Specific heat of steam = 1.520 kJ/kg °C Heat of fusion of water = 334 kJ/kg Heat of vaporization = 2256 kJ/kg (i) Heat needed to warm ice to 0 °C: Q₁: ✔KJ (ii) Heat needed to melt ice at 0 °C: Q₂: KJ (iii) Heat required to warm 0 °C water to 100 °C: Q3: KJ (iv) Heat required to vaporize water at 100 °C: Q4: KJ (v) Heat required to warm 100 °C vapor to 130 °C: Q5: KJ Total heat, Q: KJ (b) How much time is required for the entire process, assuming a constant 20.0 kJ/s rate of heat transfer? Total time, t: S

Specific heat capacity of a substance is equal to The amount of heat required to raise the temperature of a 1 kg of a substance by 1 k O The amount of heat required to change the phase of a substance from solid to liquid without any change in temperature O The amount of heat required to change the phase of a substance from liquid to gas without any change in temperature O The amount of heat required to raise the temperature of a substance by 1 k

A cup contains 187 g of coffee at 97.6 °C. Suppose 56.2 g of ice is added to the coffee. What is the temperature of the coffee after all of the ice melts? The enthalpy of fusion of water can be found in this table. Assume the specific heat capacity of the coffee is the same as water. °C Tinal 73.64 Incorrect

A student measures the following data in a calorimetry experiment designed to determine the specific heat of aluminum. (Do not assume atmospheric pressure.) Initial temperature of water and calorimeter:         70°C Mass of water: 0.400 kg Mass of calorimeter: 0.040 kg Specific heat of calorimeter: 0.63 kJ/kg · °C Initial temperature of aluminum: 26.6°C Mass of aluminum: 0.200 kg Final temperature of mixture: 65.8°C Use these data to determine the specific heat of aluminum.