Data Sheet WHETHER RECORDING DATA OR sHowING CALcULATIONS, MEMBER TO INCLUDE MEA
ID: 487190 • Letter: D
Question
Data Sheet WHETHER RECORDING DATA OR sHowING CALcULATIONS, MEMBER TO INCLUDE MEASUREMENT UNITS wITH EACH NUMERICAL VALUE. Volume of copper chloride solution in your sample final buret reading (read to 0.01 lace) 15.2 mL initial buret reading mL volume of copper chloride solution delivered 10.35 ml Mass of copper chloride per mL (from stock solution label) 0.0GH2 g/mL Mass of copper chloride in your sample (show calculation) A g compound Mass of clean, dry, empty evaporating dish Mass of evaporating dish copper: after first heating after second heating after third heating (if necessary) after fourth heating (if necessary)Explanation / Answer
From the given data,
Mass of Cu recovered = 44.23 - mass of evaporating dish + copper = x g
[pl. note : the mass of evaporating dish + copper is not given above, feed the neede value and find mass of copper]
mass of chloride in sample = 44.23 - 41.6483 = 2.5817 g
moles Cu = x g/63.546 g/mol =
moles Chloride = 2.5817 g/35.45 g/mol =
Experimental mol Cl/mol Cu (n) = 0.073 mol/(x g/63.546 g/mol)
Empirical formula is Cu + moles ratio x Cl = Cu(Cl)n
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