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lana66690 [7]
4 years ago
7

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
Physics
2 answers:
vekshin14 years ago
6 0

The correct answer is 0.64 J/g °C..........

Sergio [31]4 years ago
4 0
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
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