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Assuming that the unknown acid sample in question 1 had a mass of 0.177 g, what is the molar mass of the unknown acid?

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mols acid = grams/molar mass. You know grams and mols, solve for molar mass

How many mols are there?

6.10 x10-4 is the amount of moles.

.177/(6.1x10-4)= 290.

Make sure to include the decimal for 3 sig figs

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