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Chemistry 8 Online
OpenStudy (anonymous):

how many total atoms are in 3Na2SO4

OpenStudy (chmvijay):

what you think

OpenStudy (joannablackwelder):

The subscripts indicate how many atoms is in each molecule. The coefficient indicates how many molecules.

OpenStudy (joannablackwelder):

For example, there are 2 sodiums (Na) in each molecule, and there are 3 total molecules.

OpenStudy (anonymous):

21 atoms

OpenStudy (joannablackwelder):

Exactly, good job!

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