3 attempts left Check my work Enter your answer in the provided box. What will be...
10 attempts left Check my work Enter your answer in the provided box. What will be the final temperature of a 625 g sample of water, initially at 16.0°C, after 61.5 kJ have been added to it?
3 attempts left Check my work Enter your answer in the provided box. A student mixes 78.3 g of water at 76.5°C with 43.1 g of water at 30.7°C in an insulated flask. What is the final temperature of the combined water? PC
3 attempts left Check my work Enter your answer in the provided box. If 730 g of ethylene glycol (C2H602) is added to 1,000. g of water, what is the freezing point? C
3 attempts left Check my work Enter your answer in the provided box. A 52.0-g sample of an unknown metal at 99°C was placed in a constant-pressure calorimeter containing 80.0 g of water at 24.0°C. The final temperature of the system was found to be 28.4°C. Calculate the specific heat of the metal. (The heat capacity of the calorimeter is 14.4 J/°C.) Book J/g °C Ferences
Saved 3 attempts left Check my work Enter your answer in the provided box. When 23.4 mL of 0.500 M H2SO4 is added to 23.4 mL of 1.00 M KOH in a coffee-cup calorimeter at 23.50°C, the temperature rises to 30.17ºC. Calculate AH of this reaction. (Assume that the total volume is the sum of the individual volumes and that the density and specific heat capacity of the solution are the same as for pure water.) (d for water =...
3 attempts left Check my work Check my work Enter your answer in the provided box. At 31°C a sample of ammonia gas exerts a pressure of 4.70 atm. What is the pressure when the volume of the gas is reduced to one-tenth (0.10) of the original value at the same temperature? atm
Saved 3 attempts left Check my work Enter your answer in the provided box. When 161.0 mL of water at 26.0°C is mixed with 91.0 mL of water at 85.0°C, what is the final temperature? (Assume that no heat is lost to the surroundings; d of water is 1.00 g/mL.) PC < Prex Nexo 7 of 14 W
attempts left Check my work Enter your answer in the provided box. A 4864g piece of copper tubing is heated to 89.5°C and placed in an insulated vessel containing 159 g of water at 22.8°C. Assuming no loss of water and a heat capacity for the vessel of 10.0 J/°C, what is the final temperature of the system (c of copper = 0.387 J/g.°C)? 18. 01
2 attempts left Check my work Enter your answer in the provided box. The energy content of raisin bread is 13.1 kJ/g. Calculate the temperature increase when a slice of raising bread (34.0 g) is burned in the calorimeter. The heat capacity of the calorimeter is 38.77 kJ°C.
3 attempts left Check my work Enter your answer in the provided box. A sample of chlorine gas occupies a volume of 823 mL at a pressure of 609 mmHg. Calculate the pressure of the gas (in mmHg) if the volume is reduced at constant temperature to 215 mL. Enter your answer in scientific notation. mmHg