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26-10-2018
Chemistry

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How many moles are in 458 grams of na2so4

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26-10-2018

# moles = mass (g) / Mr (relative atomic mass)

# moles = 458 / ((23*2)+32+(16*4)

# moles= 458 / 142 = 3.2253521126760...

= 3.23 moles

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