# Determination of the empirical formula of copper oxide lab answers

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Measuring the mass, including the magnesium, gives 21.63 grams. The crucible, cover and contents are heated and then cooled and treated with water. A second heating and measuring of the final product (magnesium combined with oxygen) gives a mass of 21.82 grams. Determine the empirical formula of this oxide of magnesium. 4.

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Academia.edu is a platform for academics to share research papers. The empirical formula for Magnesium oxide is MgO, which is the correct formula and thus the aim of this experiment has been met. DISCUSSION: The experiment demonstrated the ability for a substance to exist in the empirical formula composition as the simplest ratio of elements present in the compound. Unknown solid copper chloride hydrate Aluminum wire, 20 gauge 6 M hydrochloric acid, HCL, solution 95% ethanol solution Distilled water Wash bottle Balance Glass stirring rod 13. Remove the filter paper with the copper from the funnel and leave it to dry. The empirical formula of a compound gives the lowest whole-number ratio of the constituent atoms that is consistent with the mass ratios measured by experiment. In this lab, magnesium metal (an element) is oxidized by oxygen gas to magnesium oxide (a compound).

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The copper changed to copper oxide upon heating. How many grams of oxygen were used in the reaction? Choose the closest answer. The molar mass of copper is 63.55 g/mol. How many moles of copper were reacted? The molar mass of oxygen is 16.00 g/mol. Digication ePortfolio :: General Chemistry (Bridgett D. Smith) by Bridgett D. Smith at Salve Regina University. Analysis/Conclusion: The purpose of this lab was to determine the empirical formula of a compound (magnesium oxide). In order to calculate the empirical formula, the mass of each element in the compound was determined.

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The Determination of the Empirical Formula of Silver Oxide Classic Lab Kit for AP® Chemistry demonstrates the Law of Conservation of Mass and the Law of Multiple Proportions by students determining the empirical formula of silver oxide. Determination of the Empirical Formula of Copper Oxide Introduction This experiment is designed to determine the empirical formula for a sample of copper oxide. Since copper has to common oxidation states, +1 and +2, there are two possible forms of copper oxide: Cu2O and CuO. Copper oxide is insoluble, but dissolves well in acid.

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Jan 29, 2009 · Determine the empirical formula of product: 0.004938:0.00625 = 1 : 1.3 The experiment was not done well. You may times both sides by 3 to get a ratio of 3:4 (Mg3O4) or account round down to get 1:1 (MgO) which is the correct answer. Sep 08, 2015 · The purpose of this lab was met, as we were able to answer the questions in the purpose section, in order to determine the empirical formula of iron oxide. As seen in the results section, we were able to convert the grams of iron and oxygen to moles, with prior knowledge of iron oxide’s formula.

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Academia.edu is a platform for academics to share research papers. The Spirit of Adventure is Upon Me: Deriving the Empirical Formula for an Oxide of Copper Virtual lab pictures and videos Lab handout to be filled in, and analysis questions to be answered with CSIQ. Best Answer: 1.50 grams of copper becomes 1.88 grams of copper oxide, meaning it absorbs 0.38 grams of oxygen. That's a 1:1 mole ratio, so the empirical formula is CuO. I hope that helps.

Experiment 2: Determination of the Empirical Formula of Magnesium Oxide GOAL AND OVERVIEW The quantitative stoichiometric relationships governing mass and amount will be studied using the combustion reaction of magnesium metal. Magnesium is reacted with oxygen from the air in a crucible, and the masses before and after the oxidation are measured. Lab #4: Metal Oxide Formula Determination LAB ACTIVITY : The lab handout is in your Study Packet for Lab #4: Metal Oxide . Note that this lab involves making a graph, and it should be handed in as part of the lab report. empirical formula. Example: Suppose that we want to determine the empirical formula of the oxide that formed when we ignited 0.175 g of aluminum (Al) in an open container to produce a compound of Al and O that weighed 0.331 g. The gain in mass is due to the presence of oxygen atoms that combined with the aluminum atoms in the reaction. Lab 1: Determining the Empirical Formula of a Compound: The goal of this experiment is to determine the Empirical Formula of a Compound. (The Empirical Formula of a Compound is the simplest whole number ratio between the elements of a compound) If one can synthesize a compound from elements, then it is possible to determine an experimental empirical formula for the compound, from its molar and ... Sep 08, 2015 · The purpose of this lab was met, as we were able to answer the questions in the purpose section, in order to determine the empirical formula of iron oxide. As seen in the results section, we were able to convert the grams of iron and oxygen to moles, with prior knowledge of iron oxide’s formula.

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Lab 1: Determining the Empirical Formula of a Compound: The goal of this experiment is to determine the Empirical Formula of a Compound. (The Empirical Formula of a Compound is the simplest whole number ratio between the elements of a compound) If one can synthesize a compound from elements, then it is possible to determine an experimental empirical formula for the compound, from its molar and ... Aug 28, 2012 · Why the empirical formula of copper oxide cannot be determine by using the same technique as magnesium oxide? Because Copper is a transition metal with variable velancies. Jan 04, 2015 · The purpose of repeating the heating, cooling and weighing process is to ensure complete reaction of the copper oxide. Conclusion: The empirical formula of copper oxide is CuO. Students determine the mass of copper metal produced from a given amount of copper oxide and plot this data for the entire class for each chemical method. The slope of these plots provides a measure of the mass fraction of the copper oxide salt that is copper, and the empirical formula of the salt is determined for each chemical method using ... Read this Science Lab Report and over 89,000 other research documents. The Empirical Formula of a Copper Oxide. Steven Leung 9/19/06 Lab Report The Empirical Formula of a Copper Oxide Purpose: To convert an unknown copper oxide to...

How do i find the empirical formula of copper oxide? This isfrom a lab i did in class. I already have the information ofthe mass of copper oxide, mass of copper and oxygen. How do ifind the empirical formula of Copper Oxide? Unless i have to waituntil i solve the experimental %, Theoritical %, and Percentdifference between experimental and ... Students determine the mass of copper metal produced from a given amount of copper oxide and plot this data for the entire class for each chemical method. The slope of these plots provides a measure of the mass fraction of the copper oxide salt that is copper, and the empirical formula of the salt is determined for each chemical method using ... Perform calculations to determine the empirical formula of an unknown hydrate Perform calculations to determine the mass percent of water in an unknown hydrate Introduction: Certain compounds form crystals with a definite proportion of water molecules incorporated in the crystal structure. These compounds are called hydrates. Copper(II) sulfate

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The empirical formula of a compound gives the lowest whole-number ratio of the constituent atoms that is consistent with the mass ratios measured by experiment. In this lab, magnesium metal (an element) is oxidized by oxygen gas to magnesium oxide (a compound). Academia.edu is a platform for academics to share research papers. The empirical is the simplest whole number ratio of the elements in that compound. Combustion reactions always involve oxygen and are almost always exothermic. Exothermic reactions give off energy in heat form. The purpose of this experiment is to find the empirical formula of a compound using whole numbers. Copper(II) sulfate pentahydrate is an example of such a hydrate. Its formula is CuSO4 5H2O. The five in front of the formula for water tells us there are 5 water molecules per formula unit of CuSO4 (or 5 moles of water per mole of CuSO4). The purpose of this lab is to put this knowledge to use. During this lab you will start with two separate elements and create a compound. Using the mass of the elements that you begin with and the mass of the final product, you should be able to determine the empirical formula of the compound, magnesium oxide.

Copper(II) sulfate pentahydrate is an example of such a hydrate. Its formula is CuSO4 5H2O. The five in front of the formula for water tells us there are 5 water molecules per formula unit of CuSO4 (or 5 moles of water per mole of CuSO4). The purpose of this lab is to put this knowledge to use. During this lab you will start with two separate elements and create a compound. Using the mass of the elements that you begin with and the mass of the final product, you should be able to determine the empirical formula of the compound, magnesium oxide. Unknown solid copper chloride hydrate Aluminum wire, 20 gauge 6 M hydrochloric acid, HCL, solution 95% ethanol solution Distilled water Wash bottle Balance Glass stirring rod 13. Remove the filter paper with the copper from the funnel and leave it to dry. Measuring the mass, including the magnesium, gives 21.63 grams. The crucible, cover and contents are heated and then cooled and treated with water. A second heating and measuring of the final product (magnesium combined with oxygen) gives a mass of 21.82 grams. Determine the empirical formula of this oxide of magnesium. 4.