Question

Use the References to access Important values if needed for this question, What is the energy change when the temperature of 12.9 grams of solid zinc is decreased from 36.3 °C to 22.6 °C ? Answer: Joules. Submit Answer Retry Entire Group 8 more group attempts remaining

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Answer 1

part-A specific heat Capecity of an = 0.39 I (p = 0.39 Ilgoc mass of an am: 12.9 g stop 1a 36.3°C T22 22.6°C Heat a = change is mx Cpx AT given bep - 2 (12.9 g) x 0-39 I (22.6-36.3) e get - 68.927 Heat Released (@) = -68.125 part-B mars of tickel a ma 12:49 Pa 350 Tg = 20.2°C

specific heat Capacity of His 4 = 0.44 | Je Energy Change (a) is given by - Q = mx CpXAT - 012.4.3) * 0.49 The 15-11 = (12.4 g) x 0.44 I (20.2-35e 2015 go = -80. 15 I Heat Released (a) = 80.757 part-c Heat added a = 90.9 J mass of Good Sodine = 11.7gam. final temperature a Ty = 39.2°C I Tripial temperature = Tic specific heat Capacity of I = = 0.214 I med

3) Ф mx Сех от Qo-4 д. (1-та) х - 344 с. 3. - 1) 36: 3 = 39.2. – Т. 2 т = 39-2. - 36-3 с 2: Т. 2. 4' Initial temperature (la 2.9°C parf-D Heart added = @= 1197 mass of sulpher (s) = ona 10.3 g final tempera fure = P2 = 38.2°C miral embаллдыр ет, °C Specific heat Capacity of sulphur a Cp: 0.73 I C. mm x Срх дү 2 1973 бо ча) х 10-15 ) ( 3 )

15.83 = 88.2-T 11 138.218.68 jºc 22.370 T = 22.37 °C Initial temperature (T) = 22.37°C Initial temperature (T) = 22.4°C