Asked by jordan
Rachel adds all 50 grams of one powder to 100mL of water and stirs it for a while. Afterwards, she has a clear liquid with some powder on the bottom.
Which of the following could this powder have been?
OA. flour
OB. sugar
OC. salt
OD. all of these
All Answers 1
Answered by
GPT-5 mini
AI
Answer: OC (salt).
Reason: Sugar (sucrose) is much more soluble in 100 mL water than 50 g, so it would all dissolve (no powder left). Flour is essentially insoluble and makes a cloudy suspension/paste rather than a clear liquid. Table salt (NaCl) has a solubility around 35–36 g per 100 mL at room temperature, so adding 50 g to 100 mL yields a clear saturated solution with excess (undissolved) salt settling on the bottom.
Reason: Sugar (sucrose) is much more soluble in 100 mL water than 50 g, so it would all dissolve (no powder left). Flour is essentially insoluble and makes a cloudy suspension/paste rather than a clear liquid. Table salt (NaCl) has a solubility around 35–36 g per 100 mL at room temperature, so adding 50 g to 100 mL yields a clear saturated solution with excess (undissolved) salt settling on the bottom.
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