Some extension/enrichment/tricky questions if you really want to challenge yourself and aim for a 4. Answer the following questions on a separate piece of paper and attach to the Mixing and Dissolving Assignment that was handed in class today (October 19th). The Assignment is due: Tuesday, October 24.
(e) How many milligrams of oxygen are dissolved in 500mL of water at 50°C?
(f) How many milligrams of oxygen are dissolved in 50mL of water at 30°C?
4. A student pours 1 L of water, at 10°C, into a shallow dish and places the dish outside in the Sun. After 2 h, the water has reached a temperature of 30°C.
a) Describe the effect of the temperature change on the amount of oxygen gas dissolved in the water
b) Using the particle model, explain what happened to the oxygen.
c) Draw three diagrams to illustrate your answers in (a) and (b).