Question

An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C....

An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 441-g sample of silver at an initial temperature of 85°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
My answer: 163.7 g
Your response is within 10% of the correct value. This may be due to roundoff error, or you could have a mistake in your calculation. Carry out all intermediate results to at least four-digit accuracy to minimize roundoff error.

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Let the mass od the aluminum cup is mal.

Given that

The mass of the copper stirrer mc=40 g.

The mass of the water mw=225 g.

The mass of the silver sample msi=441 g.

The temperature of the water, cup, the stirrer is T1=27oC.

The temperature of the silver Tsi=85oC.

The final temperature of the system T=32oC.

Now from the conservation of heat energy, we can say

  

     

  

  

The mass of the aluminum cup is 165.6 g.

  

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C....
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 500-g sample of silver at an initial temperature of 90°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup. g
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C....
An aluminum cup contains 225 g of water and a 40-g copper stirrer, all at 27°C. A 402-g sample of silver at an initial temperature of 86°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
An aluminum cup contains 225 g of water and a 40 g copper stirrer, all at...
An aluminum cup contains 225 g of water and a 40 g copper stirrer, all at 27°C. A 470 g sample of silver at an initial temperature of 89°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. Calculate the mass of the aluminum cup.
An aluminum cup contains 218 g of water at 21.5 C. A 412g sample of silver...
An aluminum cup contains 218 g of water at 21.5 C. A 412g sample of silver at an initial temperature of 81.6 C is placed in the water. A 40.2 g copper stirrer is used to stir the mixture until it reaches its final equilibrium temperature of 27.0 C. Calculate the mass of the aluminum cup. I have posted this twice before and Ion capa told me there answers of 24.29 and 30.3 were incorrect. Third times the charm
A 200 g of copper, initially at 300o C, is dropped into a 350 g of...
A 200 g of copper, initially at 300o C, is dropped into a 350 g of water contained in a 355 g aluminum calorimeter; the water and the calorimeter are initially 15o C. If 25 g iron stirrer is used to bring the mixture into thermal equilibrium, what is the final temperature of the system? ( Assume that the stirrer is initially at 15o C.) Specific heat of copper and aluminum are 0.092 cal/g oC and 0.215 cal/g oC respectively....
A 49-g block of copper at -11 ∘C is added to 140 g of water in...
A 49-g block of copper at -11 ∘C is added to 140 g of water in a 74-g aluminum cup. The cup and the water have an initial temperature of 4.1 ∘C. Find the equilibrium temperature of the cup and its contents.
Five perfectly insulating cups contain equal volumes of water all initially at 90°C. To each cup...
Five perfectly insulating cups contain equal volumes of water all initially at 90°C. To each cup is added a different metal block all with initial temperature of 25°C and equal mass. The metals are copper, silver, aluminum, lead, and iron. Which cup ends with the coolest water after thermal equilibrium has been established? Neglect any energy transfer into or away from the cups.
A coffee-cup calorimeter contains 130.0 g of water at 25.3 ∘C . A 124.0-g block of...
A coffee-cup calorimeter contains 130.0 g of water at 25.3 ∘C . A 124.0-g block of copper metal is heated to 100.4 ∘C by putting it in a beaker of boiling water. The specific heat of Cu(s) is 0.385 J/g⋅K . The Cu is added to the calorimeter, and after a time the contents of the cup reach a constant temperature of 30.3 ∘C . Part A Determine the amount of heat, in J , lost by the copper block....
The aluminum cup inside your calorimeter weighs 39.96 g. You add 49.96 g of ice cold...
The aluminum cup inside your calorimeter weighs 39.96 g. You add 49.96 g of ice cold water to the calorimeter. You measure the temperature of the calorimeter to be 0.5oC just before your next addition. You then add 50.44 g of hot water and a 50.10 g metal object, all having an initial temperature of 69.5oC. After the calorimeter reaches thermal equilibrium, the final temperature is measured to be 36.1oC. Assume that: the calorimeter is completely insulated the heat capacity...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT