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Hydrate Lab Answers. Detailed calculations shown Accurate data recorded (5 ± 0.3) Correct calculation for water lost Q1 - Moles of water lost Q2 - moles of anhydrous salt (159.61 g/mol) Q3 - 5 Q4 - CuSO 4 ·5H 2 O Q5 - copper(II) sulfate pentahydrate

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## Hydrate Lab Answers

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**Hydrate Lab Answers**• Detailed calculations shown • Accurate data recorded (5 ± 0.3) • Correct calculation for water lost • Q1 - Moles of water lost • Q2 - moles of anhydrous salt (159.61 g/mol) • Q3 - 5 • Q4 - CuSO4·5H2O • Q5 - copper(II) sulfate pentahydrate • Q6 - Turned back to blue, hydrate reforms • Significant digits (kept enough, kept exact)**Sample Calculations**hydrate: 2.82 g anhydrous: 1.80 g water: 0.98 g • 1.02 g ÷ 18.0 g/mol = 0.05666 mol • 1.80 g ÷ 159.61 g/mol = 0.01128 mol • 0.05666 mol ÷ 0.01128 mol = 5.02 • CuSO4·5H2O • copper(II) sulfate pentahydrate • The colour turned back to blue when water was added, indicating that the hydrate reformed. For more lessons, visit www.chalkbored.com

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