Posted by **christy** on Tuesday, April 3, 2012 at 3:42pm.

In lab you submerge 100 g of 41 degree Celcius iron nails in 100 g of 25 degree Celcius water (the specific heat of iron is 0.12 cal/g degrees Celcius)

A)Equate the heat gained by the water to the heat lost by the nails and find the final temperature of the water.

B)Your lab partner is surprised by the result and says that since the masses of iron and water are equal, the final water temperature should lie closer to 33 degrees Celcius, half-way between. What is your explanation?

- physics -
**Cecilia**, Saturday, May 26, 2012 at 10:33pm
Heat gained = Heat loss

Let final temperature be x,

Specific heat of Iron:

0.12 cal/g°C = 502 J/kg °C

Specific Heat of Water: 4186 J/kg °C

Heat gained by water = mass x specific heat capacity x change in temperature

=100(4186)* (x-25)

=(418600x-10465000)J

Heat lost by nails = mass x specific heat capacity x change in temperature

=100(502)x (41-x)

=(2058200-50200x)J

Therefore:

418600x + 50200x= 2058200+10465000

468800x = 12523200

x= 27.7 °C

## Answer this Question

## Related Questions

- college physics - calculate the specific heat of 200g of substance whose ...
- college physics - calculate the specific heat of 200g of substance whose ...
- chemistry - calculate the heat energy required to raise the temperature of a 500...
- chemistry - 100g of stea initial at 100 degree celcius is passed through a ...
- science - How much heat is required to warm 225g of ice from -46.8 degree ...
- Chemistry 1 HN - Find the mass of iron heated to 85 degrees celcius that was ...
- Chemistry - If 150.0 grams of iron at 95.0 degrees Celcius, is placed in an ...
- Physics - what is the final temperature of mixture, if 100gm of ice at 0 degree ...
- Heat Energy - A container holds 3kg of water at 25 degree celcius. If 0.5kg of ...
- industrial process - if 100 grams of water is at 100 degree celcius are poured ...

More Related Questions