Heat energy is transferred by conduction whenever molecules?
2 answers:
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Answer:
38.32 mL is minimal volume of hot water that is needed to dissolve 2.1 g of pure acetanilide.
Explanation:
Mass of acetanilide to be dissolved in hot water = 2.1 g
Mass of hot water to be used = m
Solubility of acetanilide = 55 g/L
This means that 55 grams of acetanilide dissolves in 1 L of hot water.
Then 1 grams of acetanilide will dissolve in :
0.0382 L = 0.0382 × 1000 mL =38.2 mL
1 L = 1000 mL
38.32 mL is minimal volume of hot water that is needed to dissolve 2.1 g of pure acetanilide.
Answer:
MPR=90,36%
Explanation:
The recrystallization is a purification process where the solid to purify is dissolved in an appropriated dissolvent and then, changing the conditions the solubility changes and that solid (that was in solution before) precipitates and form crystals.
In this case, for boiling water 5.50 g of acetanilide could be dissolved and then cold the water, so the mass of crystals formed will be
The maximum percent recovery is then