Answer to Question #157433 in General Chemistry for rome

Question

What mass of iron in pounds is needed to absorb 5.4 kJ of energy if its temperature is to increase by 5.0 °C? Specific heat capacity of iron is 0.449 J/gºC

Answer 1

Solution:

5,4 kJ = 5400J

mass of iron = 5400 J/ (0,449J/gºC*5ºC) = 2405,35 g

2405,35 g / 454 = 5,3 pounds

Answer: 5,3 pounds