The following data were obtained when a hydrate was heated: crucible + sample 31.781 g 30.501 g empty crucible 31.100 g crucible + sample after heating . Calculate the % water in the hydrate. SHOW WORK.

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Chapter1: Chemical Foundations
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PERCENT WATER IN A HYDRATE
PRELAB QUESTIONS
The following data were obtained when a hydrate was heated:
crucible + sample
31.781 g
30.501 g
empty crucible
crucible + sample after heating
31.100 g
1. Calculate the % water in the hydrate. SHOW WORK.
2. Decide whether the sample was BaCl₂ 2H₂O or MgCl₂ 6H₂O by calculating the
theoretical % water in each compound and comparing to your answer in #1. SHOW
WORK.
Formula weights:
NAME Rachel MacDow
MgCl2
BaCl
H₂O
=
=
95.218 g/mole
208.25 g/mole
18.0153 g/mole
Transcribed Image Text:PERCENT WATER IN A HYDRATE PRELAB QUESTIONS The following data were obtained when a hydrate was heated: crucible + sample 31.781 g 30.501 g empty crucible crucible + sample after heating 31.100 g 1. Calculate the % water in the hydrate. SHOW WORK. 2. Decide whether the sample was BaCl₂ 2H₂O or MgCl₂ 6H₂O by calculating the theoretical % water in each compound and comparing to your answer in #1. SHOW WORK. Formula weights: NAME Rachel MacDow MgCl2 BaCl H₂O = = 95.218 g/mole 208.25 g/mole 18.0153 g/mole
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