Sodium bicarbonate (baking soda) is commonly used to absorb odor. Its solubility is 9.6 g/100 g H2O at 30°C and 16 g/100 g H2O at 60°C. At 60°C, 9.2 g of baking soda are added to 46 g of water.
(a) Is the resulting mixture homogeneous at 60°C? If not, how many grams of baking soda are undissolved?
(b) The mixture is cooled to 30°C. How many more grams of water are needed to make a saturated solution?
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