Intro to Chem questions

[thenamesjimfo]

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

[Sensei]

Did you read about amu?

https://en.wikipedia.org/wiki/Unified_atomic_mass_unit

Single atom of Iodine has 126.90447 u.

[chemtopper]

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 I_{2---->this will give the mass of one atom of I}

[thenamesjimfo]

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 I_{2---->this will give the mass of one atom of I}

Oh okay! Thank you so much for breaking it down. I appreciate it!