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Chemistry Forums for Students => High School Chemistry Forum => Topic started by: IBM on September 12, 2018, 11:45:09 AM

Title: What should I consider the weight of elements in the periodic table gram or amu?
Post by: IBM on September 12, 2018, 11:45:09 AM

 Say, the atomic weight of O,15.999, is written in the periodic table. What should I consider the weights of elements in the periodic table gram or amu?  I am confused.

Title: Re: What should I consider the weight of elements in the periodic table gram or amu?
Post by: chenbeier on September 12, 2018, 11:52:38 AM

If you talk about 1 mol O then its 15,999 g. If talk about 1 atom O then its 15,999 amu. Tell what is the conection factor between both numbers?

Title: Re: What should I consider the weight of elements in the periodic table gram or amu?
Post by: IBM on September 12, 2018, 01:45:49 PM

Quote from: chenbeier on September 12, 2018, 11:52:38 AM

If you talk about 1 mol O then its 15,999 g. If talk about 1 atom O then its 15,999 amu. Tell what is the conection factor between both numbers?

Gram/mole = amu/atom

Title: Re: What should I consider the weight of elements in the periodic table gram or amu?
Post by: chenbeier on September 12, 2018, 03:01:28 PM

Check definition of mole and also Avogrodo number and calculate the factor.