Write out the formula. Isolate Tf variable then solve 1.Three ice cubes are used to chill...
(20%) Problem 2: A piece of unknown material has a mass of m, = 0.79 kg and an initial temperature of Tu = 79°C. The specific heat of water is cw = 4.180 x 102 J/(kg:°C). 50% Part (a) The sample of material is dropped into my = 1.4 kg of water at T = 19°C in a calorimeter. The calorimeter reaches a final temperature of Te = 34°C. Enter an expression for the specific heat of the unknown material,...
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Question 4 (no working required in parts (a) and (b)) Data: specific heat capacities of silver, gold, ice, water respectively: G 234;c,-126; c,-2100; cw-4190 (all in J kg-"K-1) latent heat of fusion of water: lf density of silver: p1.05 x 104 kg m-3 assume specific heat capacities are constant (a) Which one of the following is true? (A) specific...
Question 11 The following properties of titanium (Ti) are relevant to this question. Units Symbol Value Property 4.506 gcm-3 Density 47.9 g mol-I M Molar mass 8,6 x 10- K- 25.6 21.9 Coefficient of thermal expansion Molar heat capacity Thermal conductivity J mol- K- Wm- K- C k A titanium disc, which has a radius of exactly 10cm and thickness of exactly 5 mm at -20 °C, has a hole of radius exactly 1 cm drilled out of its centre....