Report abuse comment add a comment copper penny lab - please help me answer this question i did a chemistry lab in which i heated copper pennies in . Percent composition penny lab documents similar to pennies lab lab report 1 percent composition penny lab uploaded by d0cum3nt123 chemistry lab report 2. Penny lab report for only $1390/page once massed use the percent composition formula to find out how much copper is in a penny (percent composition formula . The density of pennies lab report was completed in mr flesock's advanced chemistry class this lab was to help understand the measurement of pennies using measuring instruments used in chemistry class. Step by step solution to find % cu in a penny when you know the total weight of coin and the molar amount of copper percent cu in penny david terrell ph d chemistry lab: thickness of .
Purpose: in this lab, we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc show more chemistry (redox). The composition of pennies has changed over time the purpose of this lab is to accurately determine the densities of pre-1982 and post-1982 pennies . Ap chemistry lab handout 01 per cent copper in a penny your name: _____ lab partners:_____ purpose: to determine the percent composition of copper in a penny.
Record the minting date of the penny you analyzed with the thickness of the copper layer on the penny and the % by mass of copper in the penny discussion/error analysis include a discussion of the following in your lab report:. Visible spectroscopy purdue university instrument van project the spectrophotometric determination of the copper content in the copper-clad penny. Ib chemistry experiment 4 composition of a post-1983 penny lab report background: through the use of percent composition one can easily find out how much of a certain element is in a compound or an item such as a post-1983 penny. Penny lab report word count: 327 what year the u mint changed the composition of the pennies in this lab we may use anything to determine when it happened .
The mass of a penny: long ruler or a meter stick record your data on the report form c fold the foil several times and weigh it on the analytical balance . Are all pennies created equal during world war ii the composition of the penny was changed from 95 percent copper and 5 percent zinc and tin to zinc-coated steel . Purpose: in this lab, we will determine the percent composition of a modern (post-1982) penny by using a strong acid to react and dissolve the zinc core, leaving only the copper coating once only copper remains, we will compare its mass to the entire mass of the penny to determine how much of a penny is copper and how much is zinc. The penny lab resource id#: 127980 submit feedback / report problems student data reports will support the knowledge that the metallic composition of the . % copper in post-1982 pennies 1 the problem statement, all variables and given/known data the total mass of each penny is 2500g, the density of copper is 896g/ml, the density of zinc is 714g/ml and the mass of a penny if it was 100% copper would be 311g.
Abstract: the percent composition of copper was analyzed for both pre and post 1982 pennies this was determined by iodometric titration analysis the penny was . Report abuse transcript of percentage composition lab percentage composition lab introduction purpose to determine the percentage composition of magnesium oxide. Sample traditional lab report - density of pennies it is believed that a change in the composition of pennies was made in 1982 to make them lighter. A penny for your thoughts: scientific measurements and composition of the pennies: in your lab notebook, report both values and discuss discrepancies 3 this .
Experiment 3 introduction to density on the report sheet, record the mass of vinegar the composition of the us penny was changed from copper to a. Drops on a penny lab cohesion water molecules are attracted to other water molecules the oxygen end of water has a negative charge and the hydrogen end has a positive. 2 solutionsneededforthisexperiment: solutionspreparedbythestudent solutionsprovidedbytheinstructor 1:1nitricacid concentratednitricacid. General chemistry lab 1025c comparing the density of pennies-sl introduction: occasionally the us department of treasury changes the composition of pennies, which changes the.