1. Classify the following processes as "Spontaneous" or "Non-spontaneous": (i) (ii) (iii) (iv) (v) (vi) A waterfall runs downhill A lump of sugar dissolves in a cup of coffee At 1 atm, water freezes below 0 °C and ice melts above 0 °C Heat flows from a hotter object to a colder object A gas expands in an evacuated bulb Iron exposed to oxygen and water (moisture) forms rust

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