Answer to Question #183381 in General Chemistry for Lauren Veitz

Question

An unknown metal sample with a mass of 6.6 g is heated to a temperature 52^oC, and dropped into 19.4g 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

Q = m∆TC

M_w = 18.8

= 6.6

T_n= 52°C = 30°C

T_f = 30°C

X = 18.8 (31-30) × 4.2/(6.6(31-52)

= 0.5697J