1. The temperature changes from 3S°F during the night to 75°F during the day. What is...
Phy222BS Ch1-Ch3 Review 2019 spring 1. The temperature changes from 35°F during the night to 75 F during the day What is the temperature change on the Celsius scale? A)72oC B)40°C Answer: D 32 D) 22 c The coefficient of linear expansion of steel is 12 X 10-6 K.. what is the change in length of a 25-m steel bridge span when it undergoes a temperature of 40 K? A) 1.2 cm Answer: A B) 1.4 cm C) 1.6 cm...
Phy222BS Ch1-Ch3 Review 2019 spring 1. The temperature changes from 35°F during the night to 75 F during the day What is the temperature change on the Celsius scale? A)72oC B)40°C Answer: D 32 D) 22 c The coefficient of linear expansion of steel is 12 X 10-6 K.. what is the change in length of a 25-m steel bridge span when it undergoes a temperature of 40 K? A) 1.2 cm Answer: A B) 1.4 cm C) 1.6 cm...
5. Two metal rods, one silver and the other gold, are attached to each other. The free end of the silver rod is connected to a steam chamber, with a temperature of 100°C, and the free end of gold rod to an ice water bath, with a temperature of 0°C. The rods are 5.0 cm long and have a square cross-section, 2.0 cm on a side. How much heat flows through the two rods in 60 s? The thermal conductivity...
please show the steps for A and B and C A Heat is added to a pure substance in a closed container at a constant rate. The figure shows a graph of the temperature of the substance as a function of time. If Lf - latent heat of fusion and Ly - latent heat of vaporization, what is the value of the ratio Ly/L for this substance? Temp. A) 5.0 B) 4.5 Time C) 1.5 D) 3.5 E) 7.2 B...
The temperature changes from 35°F during the night to 75°F during the day. What is the temperature change on the Celsius scale? A) 72°C B) 40°C Answer: D C) 32°C D) 22°C
A sample of steam with a mass of 0.533 g at a temperature of 100 ∘C condenses into an insulated container holding 4.25 g of water at 5.0 ∘C. (For water, ΔH∘vap=40.7 kJ/mol and Cwater=4.18 J/(g⋅∘C).) Assuming that no heat is lost to the surroundings, what is the final temperature of the mixture in Celsius?
A sample of steam with a mass of 0.536 g at a temperature of 100 ∘C condenses into an insulated container holding 4.25 g of water at 5.0 ∘C. (For water, ΔH∘vap=40.7 kJ/mol and Cwater=4.18 J/(g⋅∘C).) Part A Assuming that no heat is lost to the surroundings, what is the final temperature of the mixture?
The gas in a piston (defined as the system) is warmed and absorbs 655 J of heat. The expansion performs 348 J of work on the surroundings. Part A What is the change in internal energy for the system? ΔE = J A system releases 617 kJ of heat and does 145 kJ of work on the surroundings. Part A What is the change in internal energy of the system? ΔE = kJ A 31.2 g wafer of pure gold...
3. The specific heat of methane gas is 2.20 J/g • °C. If the temperature of a sample of methane gas rises by 15 °C when 8.8 kJ of heat energy is added to the sample, what is the mass (in kg) of the sample? 4. It takes 0.805 kJ to raise the temperature of a 0.125 kg quantity of an unknown metal (gold, silver, or aluminum) from 25.00°C to 32.14°C. What is the specific heat of the metal (in...
10. Given the thermochemical data below, what is the change in enthalpy when 10.0 g of H, are reacted? N; (g) + 3H2(g) → 2NH, (g): AH = -91.2 kJ (A) -452 kJ (B) +452 kJ (C) -151 kJ (D) -1357 kJ 11. Which of the following is NOT a state function? 1. Heat 2. Change in enthalpy 3. Change in internal energy 4. Change in pressure (A) 1 only (B) 2 only (C) 2 and 3 (D) 1 and...