.ill AT&T; 10:14 AM chem 145 lab #9 Copper Cycle.pdf Experiment 9: Copper Cycle
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.ill AT&T; 10:14 AM chem 145 lab #9 Copper Cycle.pdf Experiment 9: Copper Cycle Pre Lab Questions 1 Isabella the I Chemist starts the Copper Cycle reactions with 0.456 g of copper metal. After the last reaction, she recovers 0.413 g of copper a. What is Isabella's percent recovery (show your work)? b. According to the Law of Conservation of Mass, what should Isabella's percent recovery be? 2. For each of the listed compounds, give the correct chemical formula: a. Copper(lI) oxide b. Copper(1) chloride C. Nitric acid d. Copper(ll) hydroxide e. Hydrochloric acid f. Coppertl) nitrate 3. Balance the following chemical equations: a. KCI(s) bNas) .Pb(NO,)(aq) K(s) Cd(s) KNO laq)Explanation / Answer
2.
a) Copper(II) oxide ---------------- Cu2O
b) Copper(II) chloride ---------------- CuCl2
c) Nitric acid ----------------- HNO3
d)copper(II) hydroxide ------------------ Cu(OH)2
e) Hydrochloric acid------------- HCl
f)copper(II) nitrate---------------- Cu(NO3)2
3)
a) KCl(s) --------------- K(s) + CL2(g)
2 KCl(s) --------------- 2 K(s) +1 Cl2(g)
b) Na(s) + CdS(aq) ----------- Na2S(aq) + Cd(s)
2 Na(s) +1 CdS(aq) ---------- 1 Na2S(aq) +1 Cd(s)
c) Pb(NO3)2 (aq) + KCl(aq) -------------- PbCl2(s) + KNO3(aq)
1 Pb(NO3)2(aq) + 2 KCl(aq) ------------- 1 PbCl2(s) + 2 KNO3(aq)
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