July 16, 2019, 12:29:04 AM
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### Topic: What should I consider the weight of elements in the periodic table gram or amu?  (Read 918 times)

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#### IBM

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##### What should I consider the weight of elements in the periodic table gram or amu?
« 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.

#### chenbeier

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##### Re: What should I consider the weight of elements in the periodic table gram or amu?
« Reply #1 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?

#### IBM

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##### Re: What should I consider the weight of elements in the periodic table gram or amu?
« Reply #2 on: September 12, 2018, 01:45:49 PM »
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

#### chenbeier

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##### Re: What should I consider the weight of elements in the periodic table gram or amu?
« Reply #3 on: September 12, 2018, 03:01:28 PM »
Check definition of mole and also Avogrodo number and calculate the factor.