Atomic Mass: Introduction

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I wish you were my chemistry professor. You deserve my tuition money, not the joke who's teaching my class right now.

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He did the same for me.

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Wafaa Al Habach a

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ur welcome

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Tomorrow is my exam and all i know is lemmona

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And you wouldn’t even get that right if spelling counted 😂😂

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Hey can You please tell me How do we know exact number of electron, proton, neutron, and exact atomic mass when we cant even see atom?

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