## Chemistry (4th Edition)

d) Au$\lt$Fe$\lt$Al
Heat absorbed $q=sm\Delta T$ where s is the specific heat. Mass m and change in temperature $\Delta T$ are same for Al, Au and Fe. But, specific heats are different. $s_{Al}=0.900\,J/g\cdot \,^{\circ}C$ $s_{Au}=0.129\,J/g\cdot \,^{\circ}C$ $s_{Fe}=0.444\,J/g\cdot \,^{\circ}C$ Heat absorbed is more by metals with high specific heat. Therefore, metals can be arranged in order of increasing amount of heat absorbed as $Au\lt Fe\lt Al$