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At STP, which property would be the same for 1.0 liter of helium and 1.0 liter of argon?(1) boilin

June 2023 Regents Chemistry Exam


15 At STP, which property would be the same for 1.0 liter of helium and 1.0 liter of argon?

(1) boiling point

(2) density (3) mass (4) number of atoms


Solution: STP stands for standard temperature and pressure. When temperature, pressure, and volume (1L) is equal for two gases, the number of moles and atoms are equal as well. This is due to the ideal gas law (PV=nRT)

Answer: 4


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