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Q1-Explain on a molecular basis the difference between the vapor pressure of water and an aqueous...

Q1-Explain on a molecular basis the difference between the vapor pressure of water and an aqueous solution of sodium chloride at the same temperature

Q2-what is the atomic weight of an element that crystallizes in a face-centered cubic unit cell with an atomic radius of 1.37 A and a density of 12.023 g/cm^3

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