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At STP, two 5.0-gram solid samples of different ionic compounds have the same density. These solid s

June 2017 NY Regents Chemistry Exam


10 At STP, two 5.0-gram solid samples of different ionic compounds have the same density. These solid samples could be differentiated by their (1) mass

(2) volume

(3) temperature

(4) solubility in water



Solution: STP stands for standard temperature and pressure. Both samples are at STP and have the same temperature and pressure. They also have the same mass. Solubility is what can differentiate them from one another.

Answer: 4


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