# Physics

posted by .

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 .

• Physics -

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 -

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’

## Similar Questions

1. ### physics

Given: latent heat of fusion of water 3.33x10^5 J/kg. A 147 g cube of ice at 0 degress C is dropped into 1.3 kg of water that was originally at 79 degrees C. What is the final temperature of the water after the ice melts.
2. ### Physics

How much energy is required to change a 58 g ice cube from ice at −1◦C to steam at 101◦C?
3. ### physics

A 46 g ice cube at 0◦C is placed in 988 g of water at 90◦C. What is the final temperature of the mixture?
4. ### Phyics

How much energy is required to change a 57 g ice cube from ice at −4◦C to steam at 107◦C?
5. ### now mr. damon, physics

A 63.8 kg block of silver is at initially at 107 C. 1.0 kg of ice at its freezing point is placed onto the block to cool it. As the ice melts, the water is free to flow off (so that the water never increases in temperature). After …
6. ### physics

A 27 g ice cube at −25◦C is dropped into a container of water at 0◦C. How much water freezes onto the ice?
7. ### Physics

A 0.0500 kg ice cube at -30.0◦C is placed in 0.400 kg of 35.0◦C water in a very well insulated container. What is the final temperature?
8. ### Physics

A 0.0500 kg ice cube at -30.0◦C is placed in 0.400 kg of 35.0◦C water in a very well insulated container. What is the final temperature?
9. ### Physics

A 0.0475 kg ice cube at −30.0°C is placed in 0.577 kg of 35.0°C water in a very well insulated container. The latent heat of fusion of water is 334 kJ/kg, the specific heat of ice is 2092 J/(kg · K), and the specific heat …
10. ### physics

a) Two 36 g ice cubes are dropped into 300 g of water in a thermally insulated container. If the water is initially at 19°C, and the ice comes directly from a freezer at -19°C, what is the final temperature at thermal equilibrium?

More Similar Questions