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An empty 10-ml volumetric flask weighs 10.267 g. after filling to the mark with distilled water at 20°c, the mass is 20.219 g. what is the mass of water in the flask
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An empty 10-ml volumetric flask weighs 10.267 g. after filling to the mark with distilled water at 20°c, the mass is 20.219 g. what is the mass of water in the flask

User Queeny
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ok, so... 20.219 grams is the mass of the flask with the water in it.
10.267 grams is the mass of only the flask. Subtract them to find the water mass.

20.219 g (flask+water) - 10.267 g (flask) = 9.952 g (water)
User Mhovd
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