One tablespoon of cookie dough has a mass of 13.02 g13.02 g. It is combusted in a calorimeter whose heat capacity is 72.63 kJ/∘C72.63 kJ/∘C. The temperature of the calorimeter rises from 20.77 ∘C20.77 ∘C to 25.46 ∘C25.46 ∘C. Find the food caloric content of the cookie dough in Calories per gram.

A chemist wastes a delicious brownie by burning it in a bomb calorimeter.  Before burning, the brownie weighed 21.80 grams. During the combustion process in the bomb calorimeter, the heat of the calorimeter increased by 7.87 ∘C.   The known heat capacity of the calorimeter that was used was 42.73 kJ/∘C.  What is the energy content, in kJ/g, of this brownie? (Enter your answer with no units.  Since we are describing the energy content of the brownie, please ENTER THIS NUMBER AS A POSITIVE NUMBER, not a negative number!)

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

The table lists the specific heat capacities of select substances. Substance Specific heat capacity (J/g °C) lead 0.128 silver 0.235 copper 0.385 iron 0.449 aluminum 0.903 water 4.184 An unknown substance has a mass of 14.5 g.14.5 g. The temperature of the substance increases by 15.3 ∘C15.3 ∘C when 85.4 J85.4 J of heat is added to the substance.

A student has calibrated his/her calorimeter and finds the heat capacity to be 14.8 J/°C. S/he then determines the molar heat capacity of aluminum. The data are: 25.7 g Al at 100.0°C are put into the calorimeter, which contains 99.8 g H20 at 18.5°C. The final temperature comes to 22.6°C. Calculate the heat capacity of Al in J/mol-°C

A 56.1 g sample of polystyrene, which has a specific heat capacity of 1.880 J-g °C-1 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 thermometer. insulated container water sample. a calorimeter 區 OU Ar

A bomb calorimeter has a heat capacity of 6.067 kJ/°C. A sample of vitamin (C31H4602) has an internal energy (DE) = -2.278 X 104 kJ/mol. When 1.434 g of the vitamin sample are burned in oxygen in the calorimeter, determine the final temperature in °C if the initial temperature is 14.51 °C.

A 57.1 g sample of polystyrene, which has a specific heat capacity of 1.880 J-g¹C, is put into a calorimeter (see sketch at right) that contains 100.0 g of water. The temperature of the water starts off at 23.0 °C. When the temperature of the water stops changing it's 38.3 °C. The pressure remains constant at 1 atm. Calculate the initial temperature of the polystyrene sample. Be sure your answer is rounded to 3 significant digits. 0°C 0...º X

A researcher studying the nutritional value of a new candy places a 4.90 g4.90 g sample of the candy inside a bomb calorimeter and combusts it in excess oxygen. The observed temperature increase is 2.44 ∘C.2.44 ∘C. If the heat capacity of the calorimeter is 42.50 kJ⋅K−1,42.50 kJ⋅K−1, how many nutritional Calories are there per gram of the candy?

a) Two substances, lead and granite, initially at different temperatures, come into contact and reach thermal equilibrium. The mass of lead is 20.4 gg and its initial temperature is 55.7 ∘C∘C. The mass of granite is 18.7 gg and its initial temperature is 22.7 ∘C∘C. What is the final temperature of both substances at thermal equilibrium? (The specific heat capacity of lead is 0.128 J/(g⋅∘C)J/(g⋅∘C); the specific heat capacity of granite is 0.79 J/(g⋅∘C)J/(g⋅∘C).) b) A 4.03 gg sample of gold, initially at 70.4 ∘C∘C, is submerged into 60.8 gg of water at 17.8 ∘C∘C in an insulated container. What is the final temperature of both substances at thermal equilibrium? (The specific heat capacity of gold is 0.128 J/(g⋅∘C)J/(g⋅∘C);the specific heat capacity of water is 4.18 J/(g⋅∘C)J/(g⋅∘C).)