Anaconda Copper

This experiment is to be used to determine the era of which the composition and thus the density of the penny changed, and what the other metal besides copper has made up the composition since 1962. First, ten pennies from three different time periods (1995-1999, 2000-2004, 2005-present) were gathered. All ten pennies from a specific time were weighed together on an analytical balance. Then, a fifty mL graduated cylinder was filled with twenty mL of water, which was recorded as the initial…

The work I choose from the museum was a Bearded Bull’s Head from 2600 - 2450 BC. This was from the Sumerian, Early Dynastic III period. The bull’s head is made from copper with lapis lazuli and shell inlay which can be seen in the eyes of the bull. Since this was made from a valuable material it is thought to be used as a lintel over a door since it is too heavy for a piece of furniture. With the age of the object, it has pieces broken off of it such as the beard has only half left on. It’s not…

Title The Copper Reaction Cycle demonstrated in the experiment shows that copper can transform into different states of matter, while still conserving mass and returning back to its original room temperature solid state. Authors Makenzie Roybal * and Erin Wimberley Section CHEM 111-554 Introduction A topic of allure to many scientists is how high levels of copper intake can result in the disruption of human metabolism, and how it can degenerate the biological well being of ecosystems. The…

redox reactions, and an acid base reaction on a copper wire, called the Copper Cycle. The initial and final mass of the copper were measured and percent recovery was calculated to demonstrate that mass wasn’t created or destroyed. The balanced equations, balanced formula-unit equations, total ionic equations, net ionic equations, and half reaction equations were also determined for their appropriate reactions. In the first step of the cycle, a copper wire was dissolved by reacting it with 16 M…

1. Identify the key technical characteristics of the Daguerreotype and Calotype processes. Illustrate your answer with examples of images form each technology, and say how they reflect its characteristics. (25%) Before the invention of the wet collodion process, which produces an unlimited number of copies of finely detailed images on paper and to print, by Frederick Scott Archer in 1851, there were two photograph processes previously: the daguerreotype and the calotype. The…

Percent Copper In Brass Lab Conclusion Emily Oleisky The purpose of this lab was to observe the amount of light a solution absorbs, and use the relationships in the Beer-Lambert Law to determine the quantity of a certain compound within a complex sample. First, the relationships between wavelength, concentration, and absorbance were determined. This lab focused on identifying the absorption of copper in various brass samples, and finding the percent copper in brass. In the first activity of the…

to prove and discern the empirical formula of copper oxide using the Law of Conservation of Mass. This states that in measuring the mass of each component of copper oxide and determining the percent composition of each the copper and the oxygen within copper oxide it is possible to find the ratio of the elements within the compound. Procedure: In order to conduct this lab, 25.1mL of distilled water then 25.5mL of 3M HCl must be added 2.11g of copper oxide. This solution must be stirred until…

Was More Copper Created? Harshal Patel* and Isaac Cenoz Chem 111-491 Introduction: Copper is one of the most important and diverse elements found in nature all over the world because it can be chemically reacted with many other elements and compounds. The purpose of this experiment was to identify the different reactions that occurred through the lab and the different types of reactions. Throughout the lab, copper was put through series of reactions to see the different combinations and how its…

Lab report Questions What will happen when zinc is placed in copper (II) sulfate? What will happen when copper is placed in copper (II) sulfate? Prediction It is predicted that when you place zinc and copper (II) sulfate a reaction will occur, resulting in a precipitation. The prediction about the copper (II) sulfate and copper is that nothing will happen. Hypothesis It is hypothesised that when zinc is placed in aqueous copper (II) sulfate, a single displacement reaction will occur as the…

chemical reactions involving copper. The goal is then to perform precipitation, acid-base, decomposition, and redox reactions using the copper cycle. The mass of the copper was then analyzed using the percent recovery formula. Reaction 1: The Formation of Cu(NO3)2: Reaction 1 of the experiment involved performing a redox reaction to create Cu(NO3)2. Immediately after HNO3 was added to the copper wire (Cu), the brown NO2 gas was emitted from the solution. As the copper wire dissolved, the…