thenamesjimfo Posted September 29, 2016 Share Posted September 29, 2016 (edited) Hi! I'm having trouble with a review question. What is the mass of a single iodine molecule, I2? it says the answer is 4.215x10e-22g and I am trying to figure out how to get that answer. Edited September 29, 2016 by thenamesjimfo Link to comment Share on other sites More sharing options...
Sensei Posted September 29, 2016 Share Posted September 29, 2016 Did you read about amu? https://en.wikipedia.org/wiki/Unified_atomic_mass_unit Single atom of Iodine has 126.90447 u. Link to comment Share on other sites More sharing options...
chemtopper Posted September 30, 2016 Share Posted September 30, 2016 Hi! I'm having trouble with a review question. What is the mass of a single iodine molecule, I2? it says the answer is 4.215x10e-22g and I am trying to figure out how to get that answer. work out the I2 molar mass ---> use periodic table (review how to calculate molar mass) -----> molar mass means mass of one mole ----> one mole means 6.022*10^23 molecules---->check how many atoms are there in one molecule and then how may are there in one mole -----> divide the molar mass with total number of atoms in one mole of I2---->this will give the mass of one atom of I Link to comment Share on other sites More sharing options...
thenamesjimfo Posted September 30, 2016 Author Share Posted September 30, 2016 work out the I2 molar mass ---> use periodic table (review how to calculate molar mass) -----> molar mass means mass of one mole ----> one mole means 6.022*10^23 molecules---->check how many atoms are there in one molecule and then how may are there in one mole -----> divide the molar mass with total number of atoms in one mole of I2---->this will give the mass of one atom of I Oh okay! Thank you so much for breaking it down. I appreciate it! Link to comment Share on other sites More sharing options...
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