Answer to Question #182109 in General Chemistry for Lauren Barad

Question

An unknown metal sample with a mass of 9.2 g is heated to a temperature 52^oC, and dropped into 18.8g of water with a temperature of 30^oC. The final temperature of the system is 31^oC. Given that the specific heat of water is 4.2 ^J/_{g C}, what is the specific heat of the unknown metal?

Answer 1

M_w = 18.8

= 9.2

T_n= 52°C = 30°C

T_f = 30°C

X = 18.8 (31-30) × 4.2/(9.2(31-52)

= 0.409J