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3 Nov 2019
Extra Credit Questions for Chapter Two 1- How many phosphorus atoms are contained in 158 kg of phosphorus? 2- Calculate the mass (in ng) of 2.33 x 1020 atoms of oxygen. 3- Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the other isotope? 4-Determine the volume of hexane that contains 5.33 Ã 1022 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol. 5- How many sodium ions are contained in 99.6 mg of Na2SO3? The molar mass of NazS03 is 126.05 g/mol. Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: K-45 -47 44.8776 amu 46.9443 amu 32.88% 67.12%
Extra Credit Questions for Chapter Two 1- How many phosphorus atoms are contained in 158 kg of phosphorus? 2- Calculate the mass (in ng) of 2.33 x 1020 atoms of oxygen. 3- Gallium has an atomic mass of 69.723 amu. The Ga-69 (68.926 amu) is 60.11%. What is the amu of the other isotope? 4-Determine the volume of hexane that contains 5.33 Ã 1022 molecules of hexane. The density of hexane is 0.6548 g/mL and its molar mass is 86.17 g/mol. 5- How many sodium ions are contained in 99.6 mg of Na2SO3? The molar mass of NazS03 is 126.05 g/mol. Calculate the atomic mass of element "X", if it has 2 naturally occurring isotopes with the following masses and natural abundances: K-45 -47 44.8776 amu 46.9443 amu 32.88% 67.12%
Hubert KochLv2
21 Apr 2020