Question

Whation of a Chemical Formula Mass of crucible and Vid xan Section you Mass of crucible, lid and hydrated sample mula 21.003.8 Mass of crucible, lid and dehydrated sample Jo.0048 Mass of watch glass and filter paper 29.79 1.8 Mass of watch glass, filter paper and copper 37.2718 37.638.8 Calculations (show all work) Mass of hydrated sample 30.004-29.003 - Mass of dehydrated sample 29.791- 29.003 = .788 g Mass of copper 37.638 - 37.871 = +3678 Number of moles of copper 23.32 mol

Answer 1

Date: Page No.: Assuming the compound contains only eu, Ho and el Mass of hydrated souple a 1.oolg Mass of dehydrated somple - 0.788 g Мода (epax = 0.51 No. of moles of Cu & Mass of cu Molar mass of cu 6.005 78 mol - 0.367 g 63.546 g/mol souple - Mass of souple Mass of water evolved Moss of Hydrated Dehydrated = 1.001g - 0.788 g = 0.213 g No. of moles of water a Mass of water Molar mass of water 0.21392 00 18.015 ginal Mass of chlorine in souple a - Moss of Dehydrated souple - Mass of copper = 0.7889-0.3678 20-4219 No. of moles of chlorine Mass of a Molar mass of a 20.421 g zoolo mol 35.453 g/mol chorine Copper mole ratio in souple a 2.06 mol de 1 molan ~ 2 mal clima cu

Date: Page No.: water copper mole ratio in souple = 0.99 mol H₂O: Imolcu ~ Imol H₂O: Imolcu Formula of onhydrous somple: Formula of hydrated somple cu el, cuel, .2H₂O
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