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Mass of iron in a heat transfer (3589)
Sábado 28 de mayo de 2016, por
What mass of iron would require 1 450 cal of energy to raise its temperature by 
?
The specific heat of iron is 
To find the mass, use the formula:
![\color[RGB]{2,112,20}{\bm{Q= m\cdot c_e\cdot \Delta T}}](local/cache-vignettes/L161xH21/e77e246a491e8ba51c5ec52c0f416c16-13254.png?1732963428 "\color[RGB]{2,112,20}{\bm{Q= m\cdot c_e\cdot \Delta T}}"){kind=small}
Rearrange the equation to solve for mass:
![m = \frac{Q}{c_e\cdot \Delta T} = \frac{1\ 450\ \text{cal}}{0.113\ \frac{\cancel{cal}}{g\cdot \cancel{^oC}}\cdot 19.7\ \cancel{^oC}} = \fbox{\color[RGB]{192,0,0}{\bf 651.4\ g}}](local/cache-vignettes/L442xH58/a0984f04a75111870dfd18a23b9fd21e-1f59b.png?1732963428 "m = \frac{Q}{c_e\cdot \Delta T} = \frac{1\ 450\ \text{cal}}{0.113\ \frac{\cancel{cal}}{g\cdot \cancel{^oC}}\cdot 19.7\ \cancel{^oC}} = \fbox{\color[RGB]{192,0,0}{\bf 651.4\ g}}")