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heating the salt water and turning it back into salt

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balancing out the salt and mixing it with water

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We also measured the recrystallized salt after the heating. We also measured our empty beaker. At the end we would take the measurement we got with the recrystallized salt and subtract it with the empty beaker measurement.

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A

-Mass of salt(NaCl) used.Must be 1 and 2 grams

1.95g

B-

Mass of the empty beaker before you start.

144.12g

C-

Mass of beaker with recrystallized NaCl

145.94g

D-

Mass of recrystallized NaCl( C minus B)

-1.82g

E-

Volume of water added to dissolved NaCl

25mL

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Perido 2

Group 2

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4.) In this experiment we used many different people skills some were working with others, we worked very well together throughout this entire experiment. We worked well together because we understood one another and knew how each other worked. we always had a job throughout even when someone was doing another job, we were always ready for the next step in this experiment. Also we knew what to do throughout the whole experiment.

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1)

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A.) Mass of salt(NaCl) used. Must be between 1 and 2grams. 1.42g

B.) Mass of empty beaker before you start- 142.59g

C.) Mass of beaker with recrystallized NaCl- 144.04g

D.) Mass of recrystallized NaCl(C minus B)- 1.45g

E.) Volume of water added to dissolve NaCl- 25mL

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In this experiment, we learn how to preform and master recrystallization of an ionic compund,

to calculate the percent error of the experiment, and understanding how the result affect the percent error .

Also, we identify sources of error in the experiment.

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25mL of water

1-2grams of salt

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3.) If the percent error is negative, then a possible cause for it could be extra weight in the beaker when we put it on the electronic balance. For example, we could have took the beaker off the heating plate too early so, there could have been extra water in the beaker when we were balancing it.

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2.) If the percent error is positive, then a possible cause for it would be some salt could have fallen out somewhere during the procedure. For example, when we pour the salt out from the flask into the beaker some of the salt could have stayed in in the flask, like some of the salt might of have stuck onto the bottom of the flask.

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A-Mass of salt (NaCl) used. Must be between 1 and 2 grams. 1.96g

B-Masss of empty beaker before you start- 144.12g

C-Mass of beaker with recrystallized NaCl- 145.88g

D-Mass of recrystallized NaCl (C minus B)- -1.76g

E-Volume of water added to dissolve NaCl- 25mL