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The data shown was obtained by a student in order to determine the percent of water in a hydrate:
Mass of Hydrate = 5.0 grams
Mass of Anhydrous Compound = 3.0 grams
What is the percent of water in the hydrate?
a. 82%
b. 60%
C. 30%
d. 40%

Respuesta :

transitionstate

Answer:

                      Option-B (60%) is the correct answer.

Explanation:

                     To solve this problem first we will calculate the mass of hydrated compound as,

Hydrated Compound  =  Mass of Anhydrous Compound + Mass of Hydrate

Hydrated Compound     =  3.0 g + 5.0 g

Hydrated Compound  =  8.0 g

Secondly, we will apply following formula to find percent of water in hydrated compound,

            %H₂O  =  Mass of H₂O / Mass of Hydrated Compound × 100

Putting values,

                                       %H₂O  =  5.0 g / 8.0 g × 100

                                            %H₂O =  62.5 % ≈ 60%

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