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How to calculate atomic weight

in this video may be explained and answer of some question about How to calculate atomic weight from atomic mass and percent abundance of carbon isotopes.molar mass of water, molar mass, atomic number, atomic mass, how to calculate molar mass

take your time and do this exercise:
 -calculate the atomic weight of water 
 -calculate the atomic weight of silver
 -calculate the atomic weight of carbon
 -calculate the atomic weight of chlorine 
 -calculate the atomic weight of oxygen

These articals might help you:  »  »  »  

Chemistry is the study of matter, and all matter is made up of atoms. We will learn about elements, atomic number and mass, isotopes, moles (chemistry moles, and compounds.

we will study about atoms and elements, tiny particles that make up the world around us. What are atoms, and what kind of properties do they have? How do we weigh and count atoms? We will answer those questions in this section...

The difference between atomic weight and atomic mass in chemistry, and how it compares to the physics definitions of weight and mass. 

How to calculate atomic weight from atomic mass and percent abundance of carbon isotopes.

Introduction to the idea of a mole as a number

How to use the atomic number and the mass number to represent different isotopes.

Identifying isotopes and ions from the number of electrons, protons and neutrons

how to calculate molecular weight