O 5/2/2016 11:00 PM A s4.2/100 O 5/2/2016 05:55 PM Gradebook Print Calculator Pe

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O 5/2/2016 11:00 PM A s4.2/100 O 5/2/2016 05:55 PM Gradebook Print Calculator Periodic Table Question 14 of 16 Map pling An experiment is performed on an unknown material and produces the following heat curve. The temperature of the material is shown as a function of heat added. If the sample of material has a mass of m 9.20 g, calculate the specific heat when this material is a solid, cs, and when it is liquid, c. (Please see the hint panel for the explicit temperatures of fusion and vaporization, do not try to approximate from the graph. Temperature (Celsius) 550 350 42.2 1510 199 836 2830 Heat (J) Number O Previous Next Check Answer Give Up & View Solution Ext Hint 3

Explanation / Answer

(a) The specific heat when this material is a solid which will be given as :

using a formula, we have

Q = m Cs (Tvapor - Tfusion)

(2830 J) = (0.0092 kg) Cs [(481 0C) - (235 0C)]

Cs = (2830 J) / (2.2632 kg 0C)

Cs = 1250.4 J/kg 0C

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