A calorimeter containing 1.2 kg of water at 23.0°C is used to find the specific

Question

A calorimeter containing 1.2 kg of water at 23.0°C is used to find the specific heat of a number of substances. A 503-g sample of each substance is heated to 250°C and isMaterial placed in the calorimeter. For each of the following final temperatures, calculate the Aluminu specific heat of the substance. Using Table 1, predict what each substance is. a. 31.5°C 6. Specific Heat of Common Substances Specific Heat Specific Heat Material (/kg 897 Lead 130 Brass 376 Methano2450 C. 41.8°C d. 28.2°C Carbon Copper Glass Ice Iron 710 385 840 2060 450 Silver Steam Water Zinc 235 2020 4180 388 b. 32.8°C

Explanation / Answer

6. Assuming no heat loss,

(1.2 x 4180 x (T - 23)) = (0.503 x C x (250 - T))

C = (9972.17)(T - 23) / (250 - T)

(A) T = 31.5 deg C

C = 388 J/kg degC

Ans : Zinc

(B) T = 41.8 deg C  

C = 900 J / kg deg C

Ans: Aluminium

(C) T = 32.8 deg c

C = 450 J / kg deg C

Ans: iron

(D) T = 28.2 deg C

C = 234 J / kg deg C  

Ans: Silver

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