A2.9 kg lump of aluminum is heated to 95°C and then dropped into 10.0 kg of water at 5.0°C. Assuming that the lump-water system is thermally isolated, what is the system's equilibrium temperature? Assume the specific heats of water and aluminum are 4186 and 900 J/kg-K, respectively. Number Units

The density of ice and water are 917 kg/m³ and 1000 kg/m³. The latent heat for the transition between ice and water is 334 kJ/kg. Calculate the slope of the tangent of the coexistence curve of ice and water at T = 253 K. Select one: dP O a. dT O b. O c. O d. dP dT dP dT dP dT = -165 atm/K = -168 Pa/K = - 175 Pa/K = -143 atm/K

The density of ice and water are 917 kg/m³ and 1000 kg/m³. The latent heat for the transition between ice and water is 334 kJ/kg. Calculate the slope of the tangent of the coexistence curve of ice and water at T = 213 K. Select one: dP dT a. b. C. O d. dP dT dP dT dP dT = - -170 atm/K = — - - 181 atm/K -203 Pa/K -183 Pa/K

Ice at -12.1 °C and steam at 121 °C are brought together at atmospheric pressure in a perfectly insulated container. After thermal equilibrium is reached, the liquid phase at 44.1 °C is present. Ignoring the container and the equilibrium vapor pressure of the liquid at 44.1 °C, find the ratio of the mass of steam to the mass of ice. The specific heat capacity of steam is 2020 J/(kg C°). af Number i Initial state Units Steam - Ice Equilibrium Water

H.W) When 178 J of energy is supplied as heat to 1.9 mol of gas molecules at constant pressure, the temperature of the sample increases by 1.78 K. Calculate the molar heat capacities at constant volume and constant pressure of the gas.

2 moles of ideal oxygen gas are kept at 273 K in a volume of 11.35 dm3 with a molar heat capacity at constant pressure, Cp of 29.4 J K–1 mol–1 (independent of temperature). If the gas is heated to 373 K at constant pressure in a reversible manner. a. What is the gas's final volume? b. How much work has been done on the gas system? c. How much heat does the system supplied ? d. What is the increase in gas's enthalpy? f. What is the increase in the internal energy of the gas? Kindly indicate the given. Thank you

The concrete sections of a certain superhighway are designed to have a length of 24.0 m. The sections are poured and cured at 10.0°C. What minimum spacing should the engineer leave between the sections to eliminate buckling if the concrete is to reach a temperature of 44.0°C? (Note: If applicable, Table 1 is available for use in solving this problem.) cm Need Help? Watch It Additional Materials EI eBook

A solid cylindrical bar conducts heat at a rate of 133 W from a hot to a cold reservoir under steady-state conditions. If the length is increased by a factor of three and the diameter of this bar is doubled, the rate at which it will conduct heat between these reservoirs will be 89 W O A. O B. 177 W. OC 30 W O D. 100 w O E. 200 w.

A 0.0417-m³ container is initially evacuated. Then, 5.33 g of water is placed in the container, and, after some time, all of the water evaporates. If the temperature of the water vapor is 399 K, what is its pressure? Number i Units

The amount of radiant power produced by the sun is approximately 3.9 × 1026 W. Assuming the sun to be a perfect blackbody sphere with a radius of 6.96 × 108 m, find its surface temperature (in kelvins). Number i Units