Posted by **sam** on Friday, April 25, 2008 at 2:45pm.

if the specifc heat of iron = 0.46J/g C,how much heat is needed to warm 50g of iron from 20C to 100C

-- I do not know how to make the celcius o above the temperature number

my anwswer

Q = Mx(delta)TxC

Q=50gx80Cx0.46J/gC

Q = 1840 Joules

Delta = the triangle I do not know how to make that on the computer

- science -
**DrBob222**, Friday, April 25, 2008 at 3:19pm
I don't know how to make the delta on the computer either. I usually write as you did. I note that some students use DH for delta H, DT for delta T, DS for delta S, etc.

You answer of 1840 Joules is correct. Good work.

## Answer This Question

## Related Questions

- Chemistry - The specfic heat of iron is 0.11cal/g C. The heat of fusion of iron...
- science - what is the heat capacity of iron when a 15.75-g piece of iron absorbs...
- chemistry - calculate the heat energy required to raise the temperature of a 500...
- physics - In lab you submerge 100 g of 41 degree Celcius iron nails in 100 g of ...
- Chemistry - How much heat is needed to raise the temperature of 5.58 kilograms ...
- Chemistry - If 150.0 grams of iron at 95.0 degrees Celcius, is placed in an ...
- CHEMISTRY - Suppose a sample of hot iron is dropped in a cup of room temperature...
- Chemistry - 3490 J of heat are added to a 20.4 g sample of iron at 20◦C. ...
- chemistry - the specific heat capacity of iron metal is 0.450 j/gk. how many ...
- chemistry - The specific heat of iron is 0.498 J/g °C. If 341 J of heat is added...

More Related Questions