In this lab, we received a plastic bag with an unknown substance in it. However we knew the mass of the empty plastic bag and the number of moles in the bag. From this information we had to find what substance was inside the bag.
We took the mass of the plastic baggie and and subtracted the mass of the empty plastic bag. WE found the mass of the substance in grams and divided it by the number of moles (0.045 moles) to find molar mass. Our five options were sodium chloride, potassium sulfate, zinc oxide, sodium sulfate, and calcium carbonate. After calculating the molar mass of these compounds, our result were closes to Sodium Sulfate.
Our bag A6 contained Sodium Sulfate.
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