This website uses cookies to ensure you have the best experience. Learn more

Empirical Formula Essay

567 words - 3 pages

Experiment 2 Lab Report

The Introduction
This lab used mass and mole ratios in order to write a chemical formula. Empirical formulas can be found if we know the percent mass of the elements and molecular formula can be found if the mass of each is element is either given or calculated. In this experiment we determine mole ratios of x,y, and z by breaking the copper hydrate compound apart.
The Experimental Description
The first thing in the experiment was to measure the out 1.045g of hydrated copper chloride; it was then heated on a bunson burner at that was turned to 3. The hydrated copper chloride was stirred very frequently as it turned from blue to brown, this took about 20 minutes. The result was a smaller mass of dark brown crystals. ...view middle of the document...

At 17 minutes the reaction was much slower and didn’t seem to be happening at all until the Al was prodded and released a small cloud of bubbles. After about 25 minutes the reaction was over and the Buchner funnel was set up to separate the copper metal flakes that had been created from the solution. Once we got the Cu on the filter paper we let it dry in the oven for about 25 minutes. Once dry the mass of the Cu was determined.

The Results
In the experiment the same scale was used throughout to determine masses. First the mass of the dehydrated sample was determined by subtracting the mass of the beaker+hydrated sample from the mass of the beaker + dehydrated sample to get, 0.806g of dehydrated sample. The mass of Cu was determined by subtracting the mass of the filter paper and watch glass from the Cu on the paper and watch glass. The coppers mass was 0.38g. The Al mass was determined by simply weighing the Al before and after the reaction, 0.183g was used in the reaction. Once we had all these numbers we could determine the moles of each by using their molar masses:
Water- 0.013
Copper- 0.006
Chlorine- 0.012
Aluminum- 0.007
So we are able to get the Chemical formula CuCl2 H2O2
The Discussion
There could be systematic errors in the data the numbers are very small and there could be errors in the mass measurements or calculations. One possible error could be in the Cu measurement since there were so many ways Cu could have been lost in the experiment. The precision of this experiment seemed valid but can only be determined by plus or minus 0.0001g. The experiment seemed to be a success since the data worked out in a way where the chemical formula could be determined which was the goal for this experiment.

Other Essays Like Empirical Formula

Homework 2 How good is the Exponential Function Discounting Formula? An Experimental Study

332 words - 2 pages Homework 2How good is the Exponential Function Discounting Formula? An Experimental Study.We studies in financial economics and behavioral finance always attempt to explain various anomalies documented in the empirical literature. Recently, Loewenstein and O'Donoghue extensive review study of time discounting, they conclude the discount utility model have little empirical support. One of the anomalies, they note, is the declining-discount-rates

Bond Notes Essay

1110 words - 5 pages -, ion.Chemical FormulasEmpirical formula - shows which element are present and the simplest whole number ratio of their atoms.Molecular formula - shows the exact number of atoms of each element in the smallest unit of a substance.Empirical formulas are simplest chemical formulas, while molecular formulas are the true chemical formulas. Some molecules have the same empirical and molecular formulas.In order for compounds to be electrically neutral, the


4471 words - 18 pages implies that care must be taken when using such empirical correlation. They can be used only if there are comparative experiences on similar soil types and geological conditions. The goal of this study is to evalu- ate the test results of Holocene clays in the Charpatian Basin, thereby to provide a recommendation for choosing appropriate cone factors for this soil type. The aforementioned formula has been slightly modified and rephrased using the tip

Pte World List Academic

645 words - 3 pages formula section required constitutional analysis distribution function area approach role legislation indicate response period context significant similar text commission regulations computer items consumer achieve final positive evaluation assistance normal relevant distinction region traditional impact consequences chapter equation appropriate resources participation survey potential cultural

Contemporary Asset Pricing Theories

2440 words - 10 pages , focusing mainly on Sharpe and Lintner’s (1964a, 1965b) capital asset pricing model (CAPM). The aim of the essay is to question the validity of the CAPM by elucidating its theoretical and empirical flaws. Description of the capital asset pricing model Sharpe and Lintner’s (1964a, 1965b) CAPM is generally used in the estimation of (E) - the equity cost of capital (i.e. expected return on equity/assets). E = Rf + β(ERP) The risk

Absorption Spectra of Conjugated Dyes

2427 words - 10 pages with an empirical parameter α to 1.2 was required for more reliable predictions of 1,1’-diethyl-2,2’-cyanine iodide, 1,1’-diethyl-2,2’-carbocyanine chloride, and 1,1’-diethyl-2,2’-dicarbocyanine iodide. The more polarizable end group compounds like the polymethine dyes retained higher wavelengths of absorption. Introduction: Determination of the box length in the one-dimensional particle-in-a-box model can be found through the absorption

Accounting Theory

3331 words - 14 pages on conservative financial reporting, dissecting Akerlof’s article surrounding information asymmetry. Following this, possible motivations by firms to undertake these accounting measures will be meted out, coupled with an examination of the empirical evidence in reflection of the measurement of conservatism, with a final conclusion pertaining the relationship of information quality and financial reporting choices being ascertained. 2


1732 words - 7 pages asset beta is the weighted average betas of debt and equity. We use market value proportions of debt and equity (see CAPM, p. 476). It is common to assume that debt has no relationship to market risk; that Empirical studies of corporate debt returns suggest it would be better to assign some market-related risk to corporate debt; and use estimates ranging from 0.20 to 0.30. We will compute both. To get , the equity beta for Ameritrade, we would

Water - tittle

1001 words - 5 pages Water is a molecule consisting of one oxygen atom and two hydrogen atoms, held by sharing its valance shell electrons in order to achieve a full shell. The intermolecular forces are therefore a strong covalent bonds between the atoms, forming a molecule with the empirical formula H2O. A water molecule has a non linear molecule shape and due to its 2 lone pairs of electrons and 2 bonded pairs of electrons that repel each other, has a bond angle

End of World

2999 words - 12 pages listed on Muscat watch in financing sector. These 10 companies include 6 banks and 4 insurance and financing company .The data is collected for a period of 1 year starting from January 2011 to January 2012. The closing price values are taken from Muscat watch on monthly basis and then the formula is used to calculate the returns of each month. The formula which is used to calculate the returns of each company is: After that beta values is

Hamptonshire Express Case Study

2300 words - 10 pages informative content of such paragraph; therefore she spent a lot of time in that. Sheen had obtained records of the time that she every day had spent every day developing the paragraph. Using empirical data of the last settiamne, Sheen had developed Figure 1 to study the connection between the number of hours to invest in the to create the paragraph and the question for Express on given every day. The function in figure 1 can be expressed

Related Papers


532 words - 3 pages Title of the experiment : EMPIRICAL FORMULA OF MAGNESIUM OXIDE Course : Experiment Number : 3 Instructor Name : Date : 17 June 2014 Objectives After carrying out the experiment, we are able to: 1. Determine the empirical formula for magnesium oxide 2. Gain practical experience in developing techniques using crucible Procedure 1. Heated a clean, dry porcelain

Lab Report Chemistry

1179 words - 5 pages carcinogen. • Teratogenicity / Embryotoxicity: Not known to harm the unborn child. • Reproductive Toxicity: Not known to be a reproductive hazard. • Mutagenicity: Suspect mutagen. May cause genetic damage based on animal information. Pre-Lab Questions 1. Provide the key term that corresponds to each of the following definitions. Empirical formula (a) the chemical

Stoichiometry Essay

640 words - 3 pages I. Good things to know • stoichiometry, chemical formula • ionic compound  formula unit • hydrate, anhydrous • molecular compound  molecule • mole, Avagadro’s Number • formula mass, molar mass, molecular mass • Standard Temperature and Pressure (STP) • percent yield • limiting reactant, excess reactant • Law of Definite Proportions, Law of Multiple Proportions • empirical formula, molecular formula â

Design Of Home Essay

566 words - 3 pages Properties of Substances and Their Structures (experiment B) Aim To investigate the empirical formula of a compound and to specify the empirical formula of a compound. Hypothesis I predict that the mass of copper sulfate will decrease if heated / burned, because the hydrogen inside it will vaporize and therefore the mass of CuSO4 after heated / burned decrease. Variables Independent : CuSO(Copper Sulfate) Dependent