Homework Help: Physics

Posted by Tiffany on Wednesday, January 30, 2013 at 5:35pm.

A 123 g cube of ice at 0◦C is dropped into 1.9 kg of water that was originally at 81◦C.
What is the final temperature of the water after after the ice melts? The latent heat of fusion of water is 3.33 × 105 J/kg .
Answer in units of ◦C

Physics - Tiffany, Wednesday, January 30, 2013 at 5:59pm
You have collected exactly 2800 aluminum cans for recycling, each with a mass of 13.6 g. How much energy is needed to melt them if their initial temperature is 26.2◦C? Assume the specific heat, the latent heat and the melting point of aluminum are 899 J/kg ·◦ C,
3.97 × 105 J/kg and 660.4 ◦C, respectively. Answer in units of J
Physics - Elena, Wednesday, January 30, 2013 at 6:52pm
Ice:
Q= λm + cm(t-0) = λm + cmt
Water
Q=cm₁(81-t)

λ=3.33•10^5 J/kg .
m=0.123 kg
m₁ = 1.9 kg
c = 4186 J/kg •◦ C

λm + cmt= c m₁(81-t)
Solve for ‚t’

Answer this Question

Related Questions

physics - Given: latent heat of fusion of water 3.33x10^5 J/kg. A 147 g cube of ...
Physics - A 6-g ice cube at −8°C is dropped into 70 g of water at ...
physics - A 5-g ice cube at ?4°C is dropped into 60 g of water at 40°C...
Physics - Given: cp,ice = 2090 J/kg◦C cp,water = 4186 J/kg ·&...
physics - A 50g ice cube is added to 110g of water in a 62g aluminum cup. The ...
chemistry - An ice cube with a mass of 40.0 g melts in water originally at 25.0 ...
ice cube mass??? - an ice cube at 0 was dropped into 30.0 g of water in a cup at...
physics - a 9.0 g ice cube at -10 C is put into a thermos flask containing 100 ...
physics - There is a problem that asks if an ice cube is dropped into nitrogen (...
Chemistry - An ice cube at 0 degrees Celsius was dropped into 30.0g of water in ...

For Further Reading

First Name:
School Subject:
Answer: