A 50 g sample of an unknown metal is heated to 90.0C. It is placed in a perfectly insulated container along with 100 g of water at an initial temperature of 20C. After a short time, the temperature of both the metal and water become equal at 25C. The specific heat of water is 4.18 J/gC in this temperature range. What is the specific heat capacity of the metal?

Record your answer with two significant figures. J/gC

Question

Pierre Bowman

19 May, 07:27

+2

Answers (2)

Know the Answer?

Jorden Washington · Answer 1

The correct answer is 0.64 J/g °C ...

Andrade · Answer 2

Q = mcΔT

Qwater = - Qmetal

(100 g) (4.18 J/g°C) (25°C - 20°C) = - (50 g) c (25°C - 90.0°C)

2090 J = (3250 g °C) c

c = 0.643 J/g °C