Chemistry
posted by teena .
A sample of iron was heated to 161.0°C, then placed into 338 g of water at 21.6°C. The temperature of the water rose to 26.9°C. How many grams of iron were in the sample?
Specific heat for Iron is 0.473.

Chemistry 
DrBob222
You have no units on the specific heat of Fe.
heat lost by Fe + heat gained by water = 0
[mass Fe x specific heat Fe x (TfinalTinitial)] + [mass H2O x specific heat H2O x (TfinalTinitial)] = 0
Substitute the numbers and solve for mass Fe.
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