-1 A 56.1 g sample of polystyrene, which has a specific heat capacity of 1.880 J-g °C¯¹₁ , is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The temperature of the water starts off at 24.0 °C. When the temperature of the water stops changing it's 29.8 °C. The pressure remains constant at 1 atm. Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to the correct number of significant digits. °C 0 thermometer insulated container water sample a calorimeter 6 d A

A 60.0 g sample of iron is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The iron sample starts off at 98.3 °C and the temperature of the water starts off at 22.0 °C. When the temperature of the water stops changing it's 24.1 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of iron according to this experiment. Be sure your answer is rounded to the correct number of significant digits. 0 J g. °C x10 X thermometer insulated container water sample. a calorimeter

To treat a burn on his hand, a person decides to place an ice cube on the burned skin. The mass of the ice cube is 12.7 g,12.7 g, and its initial temperature is −14.4 ∘C.−14.4⁢ ∘C. The water resulting from the melted ice reaches the temperature of his skin, 29.8 ∘C.29.8⁢ ∘C. How much heat is absorbed by the ice cube and resulting water? Assume that all of the water remains in the hand. q= J

A 55.1g sample of polystyrene, which has a specific heat capacity of 1.880·J·g−1°C−1, is put into a calorimeter (see sketch at right) that contains 200.0g of water. The temperature of the water starts off at 25.0°C. When the temperature of the water stops changing it's 31.9°C. The pressure remains constant at 1atm . Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to the correct number of significant digits.

Determine the standard enthalpy (ΔH) for this reaction and explain the cooling effect that is experienced when methanol is accidentally dropped on the skin. The standard enthalpy of formation for CH3OH(l) is -239.1 kJ/mol and for CH3OH(g) is -189.83 kJ/mol. CH3OH(l) → CH3OH(g)

A 55.0 g sample of brass is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The brass sample starts off at 86.7 °C and the temperature of the water starts off at 23.0 °C. When the temperature of the water stops changing it's 26.5 °C. The pressure remains constant at 1 atm. Calculate the specific heat capacity of brass according to this experiment. Be sure your answer is rounded to the correct number of significant digits. J 0- g-°C 0 x10 X thermometer. insulated container water sample a calorimeter

A 56.2 g sample of aluminum, which has a specific heat capacity of 0.897 J-g¹C¹, is put into a calorimeter (see sketch at right) that contains 250.0 g of water. The temperature of the water starts off at 24.0 °C. When the temperature of the water stops changing it's 26.9 °C. The pressure remains constant at 1 atm. Calculate the initial temperature of the aluminum sample. Be sure your answer is rounded to the correct number of significant digits. °C X Ś thermometer- insulated. container water sample a calorimeter

A particular container holds 3.77 mol of neon gas. The volume of this container can be altered by sliding a piston in or out. The volume is changed from 8.60 L to 12.20 L while at the same time the temperature is changed from 303 K to 345 K. The molar heat capacity, Cym, for neon is 12.47 J/(mol · K). Assume that this value will not change over the given temperature range. What is the change in entropy for the gas? AS = J/K TOOLS x10 MacBook Pro

thermometer A 58.2 g sample of polystyrene is put into a calorimeter (see sketch at right) that contains 300.0 g of water. The polystyrene insulated container sample starts off at 89.1 °C and the temperature of the water starts off at 19.0 °C. When the temperature of the water stops changing it's 23.0 °C. The pressure remains constant at 1 atm. water Calculate the specific heat capacity of polystyrene according to this experiment. Be sure your answer is rounded to the correct number of significant digits. sample a calorimeter J Ox10 g.°C ?

A sample of iron, which has a specific heat capacity of 0.449 J-g¹C¹, is put into a calorimeter (see sketch at right) that contains 150.0 g of water. The iron sample starts off at 85.1 °C and the temperature of the water starts off at 22.0 °C. When the temperature of the water stops changing it's 24.3 °C. The pressure remains constant at 1 atm. Calculate the mass of the iron sample. Be sure your answer is rounded to 2 significant digits. 08 X S thermometer. insulated container water- sample a calorimeter 區 de