Galvanized nails are iron nails that have been plated with zinc to prevent rusting. the relevant reaction is

zn2+(aq)+2e−→zn(s)

for a large batch of nails, a manufacturer needs to plate a total zinc mass of 3.30 kg on the surface to get adequate coverage.

part a

how many moles of zinc are in 3.30 kg of zinc?

express your answer to three significant figures and include the appropriate units.

50.5 mol
submithintsmy answersgive upreview part

correct

significant figures feedback: your answer 50.47mol was either rounded differently or used a different number of significant figures than required for this part.

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.

13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.

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