Question

# When a 310-g piece of iron at 180 ∘C is placed in a 95-g aluminum calorimeter...

When a 310-g piece of iron at 180 ∘C is placed in a 95-g aluminum calorimeter cup containing 250 g of liquid at 10∘C, the final temperature is observed to be 37 ∘C. The value of specific heat for iron is 450 J/kg⋅C∘, and for aluminum is 900 J/kg⋅C∘. Part A Determine the specific heat of the liquid. Express your answer using two significant figures. c c = nothing Jkg⋅C∘ Request Answer

Solution,

Q = m c dT

mI ci Ti = ma ca Ta + mw cw Tw

0.310 x 450 x 143 = 0.095 x 900 x 27 + 0.250 x Cw x 27

Cw = 2613.33 J/kg

#### Earn Coins

Coins can be redeemed for fabulous gifts.

Similar Homework Help Questions
• ### An 920-g piece of iron at 100* C is dropped into a calorimeter of negligible heat...

An 920-g piece of iron at 100* C is dropped into a calorimeter of negligible heat capacity containing 50g of ice at 0* C and 92 g of water, also at 0* C. What is the final temperture of the system? The specific heat of iron is 448 J/kg K and Latent heat of fusion of water is 33.5 x 10^4 J/kg Please show all necessary equations and steps. thank you!

• ### A 336-9 piece of iron at 220°C is placed in a 60.0-g aluminum cup containg 432...

A 336-9 piece of iron at 220°C is placed in a 60.0-g aluminum cup containg 432 g of glycerin at 13.6°C The specific heat of iron is 0.110 met aluminum 0.215 year and glycerin 0.549 Part A Determine the equilibrium temperature of the system Express your answer using three significant figures. 0 AM Op? Submit Request Answer Provide Feedback

• ### Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are...

Problem 5: A 95-g aluminum calorimeter contains 241 g of water. The aluminum and water are initially in thermal equilibrium at a temperature of 9.3°C. Two solid objects are then placed in the water. One is a 50.3-g piece of copper with a specific heat of 390 J/(kg:°C) and an initial temperature of 81.2°C. The other is of unknown material with a mass of 69 g and an initial temperature of 100°C. The entire system reaches thermal equilibrium at a...

• ### An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter...

An aluminum calorimeter with a mass of 100 g contains 250 g of water. The calorimeter and water are in thermal equilibrium at 10°C. Two metallic blocks are placed into the water. One is a 51.0-g piece of copper at 80°C. The other has a mass of 544 g and is originally at a temperature of 100°C. The entire system stabilizes at a final temperature of 20°C. (a) Determine the specific heat of the unknown sample. (J/Kg*C) (b) Using the...

• ### The value of specific heat for copper is 360 J/kg x C degrees, for aluminum is...

The value of specific heat for copper is 360 J/kg x C degrees, for aluminum is 900 J/kg x C degrees, and for water is 4186 J/kg x C degrees. Course Home <Ch 14 HW Item 6 6 of 10 Consta The value of specific heat for copper is 390 J/kg.C.for aluminun is 900 J/kg.C. and for water is 4186 J/kg.C. Part A What will be the equilibrium temperature when a 215 g block of copper at 235 °C is...

• ### Problem 14.20 Constants Part A A 235-g sample of a substance is heated to 350 °C...

Problem 14.20 Constants Part A A 235-g sample of a substance is heated to 350 °C and then plunged into a 105-g aluminum calorimeter cup containing 195 g of water and a 17-g glass thermometer at 13.5 °C. The final temperature is 35.0°C. The value of specific heat for aluminium is 900 J/kg-C" , for glass is 840 J/kg . C" , and for water is 4186 J/kg C What is the specific heat of the substance? (Assume no water...

• ### Question 1 (3 marks) A concrete highway is built of slabs 12 m long (at 15°C)....

Question 1 (3 marks) A concrete highway is built of slabs 12 m long (at 15°C). How wide should the expansion cracks be- tween the slabs be at 15°C to prevent buckling of the concrete over the range of temperature -30°C to +50°C? The coefficient of thermal expansion for concrete is 12 x 10""(Cº). Question 2 (3+3 = 6 marks) (a) At 18.0°C, a certain quantity of oxygen occupies a volume of 61.5 L at an absolute pressure of 2.45...

• ### 1) An aluminum calorimeter of mass 58 g, has 155 g water, both at a temperature...

1) An aluminum calorimeter of mass 58 g, has 155 g water, both at a temperature of 21°C. A 108-g piece of metal originally kept in boiling water (T = 100°C) is transferred to the calorimeter. The final equilibrium temperature of the mixture is 26.6°C. Calculate the specific heat of the metal (in J/kg). Specific Heats: Al = 900 J/kg, water =4186 J/g 2) How much heat, in kilo-joules, is required to convert 19 g of ice at -13°C into...

• ### A cube of ice is taken from the freezer at -7.5 °C and placed in a...

A cube of ice is taken from the freezer at -7.5 °C and placed in a 95-g aluminum calorimeter filled with 330 g of water at room temperature of 20.0 °C. The final situation is observed to be all water at 16.0 °C. The specific heat of ice is 2100 J/kg · Cº, the specific heat of aluminum is 900 J/kg . C°, the specific heat of water is is 4186 J/kg . C°, the heat of fusion of water...

• ### A 297 g silver figure of a polar bear is dropped into the 203 g aluminum...

A 297 g silver figure of a polar bear is dropped into the 203 g aluminum cup of a well‑insulated calorimeter containing 273 g of liquid water at 20.3 ∘ C . The bear's initial temperature is 99.1 ∘ C . What is the final temperature of the water, cup, and bear when they reach thermal equilibrium? The specific heats of silver, aluminum, and liquid water are, respectively, 234 J / ( kg ⋅ K ) , 910 J /...