A brass rod 100 mm long and 5 mm in diameter extends horizontally from a casting at 200°e. the rod is in an air environment with t∞ = 20°c and h = 30 w/m2 ∙ k. what is the temperature of the rod 25, 50, and 100 mm from the casting?

Question

Rudy Molina

Chemistry

17 May, 18:15

A brass rod 100 mm long and 5 mm in diameter extends horizontally from a casting at 200°e. the rod is in an air environment with t∞ = 20°c and h = 30 w/m2 ∙ k. what is the temperature of the rod 25, 50, and 100 mm from the casting?

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Deon Hahn · Answer 1

When temperature is increased, the rate of dissolving increases. The kinetic energy of the molecules of the solute and solvent molecules is high thereby increasing their contact. An example is mixing powdered sugar to the water. When you add water to the sugar, the dissolving process is slow. However, when you increase the temperature of the water by boiling it, the sugar dissolves immediately.