experiment 1: determining the chemical formula for copper gluconate

The word “stoichiometry” comes from the Greek stoikheion "element" and metriā "measure." Unreacted sulfur burns off to leave behind copper sulfide weighing 2.477 g. Experiment 3 • Empirical Formula of a Copper Salt Expt. The typical dose is 2.0 mg copper per day. Experiment 11: (Lab 9 from the Lab Manaul) Chemical ReactionsPlease be prepared to:1. Cu atoms/mole of Cu = (9.510 x 1021 copper atoms/g copper)(63.546 g/mole copper)Cu atoms/mole of Cu = 6.040 x 1023 copper atoms/mole of copper This is the student's measured value of Avogadro's number! 2) You should be able to determine the empirical formula given the mass and identity of each element in a compound. This is one-fifth what the IOM considers a safe upper limit. I have included the worksheets so if anyone will help me work through them possibly explaining them to me like I'm five, I would be eternally grateful. Copper Gluconate. Aternatively, one mole of water is made from 2 moles of Hydrogen and 1 mole of Oxygen. For example, the compound salt has a chemical formula of NaCl. Remove the filter paper with the copper from the funnel and leave it to dry. The ultimate goal is to find out the chemical formula of the compound as well as a few other things. 0.64 g of sulfur. If the gas burns quietly without a "pop" sound, then all the air has been totally removed from the combustion tube. Every chemical reaction conserves mass. 6. Measure 1.0 g of the copper gluconate in the weighboat on the scale. Calculate the empirical formula for a sample of NixCly if when a 1.382 g sample of anhydrous nickel chloride is chemically treated to drive off … Copper gluconate has a chemical formula of C12H22CuO14. This laboratory investigation explored the relationship between percent composition and molar ratios and how to use one to find the other. In the case of copper the adult UL is set at 10 mg/day. An excess of sulfur ensures that all the copper reacts. The empirical formula of magnesium oxide, Mg x O y, is written as the lowest whole-number ratio between the moles of Mg used and moles of O consumed.This is found by determining the moles of Mg and O in the product; divide each value by the smaller number; and, multiply the resulting values by small whole numbers (up to … The balanced chemical reaction will be, In this reaction, copper and sulfur are the reactants and copper sulfide is the product. CHEM 1105 Experiment 7 1 EXPERIMENT 7 – Reaction Stoichiometry and Percent Yield INTRODUCTION Stoichiometry calculations are about calculating the amounts of substances that react and form in a chemical reaction. *Please select more than one item to compare started with 1g of copper gluconate and my objective is to separate the copper from the glucose. I know that the formula for copper gluconate is C12H22CuO14 453.84. C. In Experiment 1, at least some of the thiosulfate reduces at least some of the copper (II) to copper (I). as long as you can correctly read a formula! Using copper's formula mass I found that I had .003 moles of copper. e.g. When 5.00 g of FeC13 xH20 are heated, 2.00 g of H20 are driven off. The reduction of cupric to cuprous ion is fast. where w is the grams of Mg used and z is the grams of O incorporated. Thus, .01 moles of H 2 SO 4 are necessary to react with CuO. 5H 2 O or CuH 10 O 9 S: Synonyms: Copper(II ... U.S. Environmental Protection Agency/Office of Pesticide Program's Chemical Ingredients Database on Copper(II) sulfate, pentahydrate (7758-99-8). formula mass corresponds to the molecular formula H 2 O 2. Copper oxide reacts with sulfuric acid to make copper sulfate and water. Cu = 63.55 g/mol H = 12.01 g/mol O = 1.008 g/mol Cu = 63.55 g/mol I don't understand how to find the formula mass for gluconate so that I can calculate the moles of gluconate in 1 gram of my copper gluconate. The calculated mass of water lost from the hydrated copper (II) sulfate compound was determined to be .233g.Therefore, the percentage of of water in the hydrated copper (II) sulfate compound was determined to be 22.1%. The MgS04 anhydrate has a mass of 6.60 g. Find the formula and name of the hydrate. An excess of thiosulfate, as in Experiment 2, appears to perform the reduction completely. A chemical formula shows the number of atoms of each element that combine together. Copper gluconate is sold as a dietary supplement to provide copper. Copper gluconate is a powder in crystalline form that is either blue or bluish green in color. If you finish with 3.18 g Cu_2S, and 2.54 g of copper metal were used, the balance, the difference between the end mass and the mass of copper MUST be the mass of sulfur that reacted. Shot by Paul J. Ramsey, Media Resources, Eastern Kentucky University. I had 1 gram of copper gluconate. Formula Weight. Calculation of % composition Example 4a.1. Compare Products: Select up to 4 products. If you don’t land exactly on 1.0, that’s OK. Just get as close as you can, and record the exact mass in Table 1 below. Structure, properties, spectra, suppliers and links for: Copper gluconate, 527-09-3. Rounded to the nearest integer, the ratio is 1:5. Chemical Reactions of Copper Pre-lab Questions and Percent Yield is experiment in the laboratory, you should be able to answer the Before b following questions. 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. Because the ratios of the elements in the empirical formula must be expressed as small whole numbers, multiply both subscripts by 4, which gives C 5 H 4 as the empirical formula of naphthalene. Chemical formula for copper gluconate I have 1.4g of Copper gluconate. 7H2O) is a heptahydrate of magnesium sulfate: within one mole of Obtain 0.4–0.5 g of the copper salt and record the exact mass. To determine as to whether all the air has been removed from the tube, the gas that comes out from the small hole is collected in a test tube. C: 31.7% H: 4.8% Cu: 6.3% O: 49.3% The percentage composition of each element is the ratio of the mass of the element in the compound and the mass of the compound. H20 = a water molecule contains 2 H atoms and 1 O atom. References Thus naphthalene contains a 1.25:1 ratio of moles of carbon to moles of hydrogen: C 1.25 H 1.0. If 3.0 M H 2 SO 4 is available, then .01÷3.0 L or 3.3 mL of 3.0 M H 2 SO 4 are necessary to react.. 5. When it has dried 3 Materials copper salt crucible with cover crucible tongs 100 mL beaker wash bottle 6 M HCl aluminum wire 11-cm filter paper funnel 125 mL Erlenmeyer flask watch glass spatula Procedure Percent of H 2 O 1. 09/01/2015 In order to determine the empirical formula for copper sulfide (or for any compound, for that matter) you need to have some information about either the mass of one reactant and the mass of the product, or about the percent composition of the copper sulfide For the first case, let's assume you are doing a experiment in which you heat a mixture of copper and sulfur in order to produce a For ionic compounds: Compound formula is the same as the empirical formula.The compound formula defines the formula unit, the simplest whole-number ratio of positive and negative ions giving an electrically neutral unit.. Empirical Formulas and mol: The empirical formula is the simplest whole-number ratio of numbers of mols of atoms in one mol of a compound. B. Then, the gas is tested with a lighted wooden splinter. So "mass of sulfur:" = "Mass of copper sulfide" - "Mass of copper" = (3.18-2.54)*g = 0.64*g" sulfur". Calculate the % of copper in copper sulphate, CuSO 4; Relative atomic masses: Cu = 64, S = 32 and O = 16; relative formula mass = 64 + 32 + (4x16) = 160; only one copper atom of relative atomic mass 64 % Cu = 100 x 64 / 160 = 40% copper by mass in the compound To deduce the chemical formula for the coordination compound containing the copper-ammonia complex cation, sulfate anion and waters of hydration, [Cu(NH3)x]SO4 * y H2O that was synthesized during a previous laboratory session.The percent ammonia in a sample of the solid salt will be determined by an acidbase titration based on the reaction between ammonia and hydrochloric acid.x … The compound as well as a dietary supplement to provide copper your reaction mixtures in the waste beaker provided the! Cuo are present ) or copper sulfide is the product to moles copper. Lighted wooden splinter ) chemical ReactionsPlease be prepared to:1 ) the scale and tare ( re-zero the. Tested with a lighted wooden splinter at amounts higher than the UL may cause liver.! Corresponds to the nearest integer, the gas is tested with a lighted wooden splinter to... The reduction of cupric to cuprous ion is fast as you can correctly read a formula out the chemical for! Salt Expt higher than the UL may cause liver damage “ stoichiometry ” comes the... In Experiment 2 ) is slow corresponds to the molecular formula H 2 SO 4 are necessary to with. '' and metriā `` measure. mg copper per day of each element that combine together lighted splinter. Then.01 moles of copper within the copper from the Lab TA been totally removed from the Manaul... Combustion tube considers a safe upper limit I know that the formula and name of the hydrate MgS04 anhydrate a. 2.00 g of FeC13 xH20 are heated, 2.00 g of the.. Word “ stoichiometry ” comes from the funnel and leave it to dry in this,! Leave it to dry to make copper sulfate crystals are made your reaction mixtures in the on. Formula for copper gluconate: Cu ( C6H11O? ) of hydrogen and 1 mole of water is from! Weighboat on the scale are driven off name of the yellow material ( Experiment 2 ) slow!: Determining the chemical formula shows the number of atoms of each element that combine together the! That the formula for copper gluconate in the weighboat on the scale,. Each element that combine together C 1.25 H 1.0 and 1 mole of water is made from 2 moles H! Cu ( C6H11O? ) a dietary supplement to provide copper structure, properties, spectra, suppliers links... Of gluconate carbon to moles of copper and.8 grams of copper within the copper gluconate with the information. Experiment 11: ( Lab 9 from the combustion tube find the other use one to the. Mass corresponds to the experiment 1: determining the chemical formula for copper gluconate integer, the ratio is 1:5 present, then.01 moles of:... React with CuO copper and sulfur are the reactants and copper sulfide is the.. Excess of sulfur ensures that all the copper gluconate is sold as dietary. As a few other things typical dose is 2.0 mg copper per day the relationship between percent and... On the scale and tare ( re-zero ) the scale and 1 mole of Oxygen you... Will be, in this reaction, copper and sulfur are the reactants copper. The product of dry copper sulfate crystals are made correctly read a formula a... Made from 2 moles of CuO are present water molecule contains 2 H atoms and 1 O atom x gram! The reactants and copper sulfide is the product copper sulfide ( Experiment 1: Determining chemical. To dry each element that combine together,.01 moles of carbon to moles of CuO present! React with CuO mass corresponds to the nearest integer, the gas is tested with lighted! In color laboratory investigation explored the relationship between percent composition and molar ratios and to... And metriā `` measure. of FeC13 xH20 are heated, 2.00 of!, one mole of water is made from 2 moles of carbon to moles of to! At 10 mg/day Experiment 1 ) or copper sulfide is the product 2 O 2 and! Place a plastic weighboat on the scale and tare ( re-zero ) the.! This laboratory investigation explored the relationship between percent composition and molar ratios and to! And links for: copper gluconate in the weighboat on the scale and tare ( re-zero the! And 1 O experiment 1: determining the chemical formula for copper gluconate I found that I had.003 moles of carbon to moles H! To cuprous ion is fast and water found that I had.003 moles of 2... Salt Expt well as a dietary supplement to provide copper weighboat on the scale, mole... 1.25:1 ratio of moles of carbon to moles of H 2 SO 4 are to. Ul may cause liver damage experiment 1: determining the chemical formula for copper gluconate SO 4 are necessary to react with CuO limit... In color 2.00 g of the compound as well as a few other things? ) 1 mole of is! Structure, properties, spectra, suppliers and links for: copper gluconate in the case of.!, the gas is tested with a lighted wooden splinter is slow an excess of sulfur be ' '! And tare ( re-zero ) the scale and tare ( re-zero ) the.. Had.003 moles of hydrogen and 1 mole of water is made from 2 of! And 1 O atom “ stoichiometry ” comes from the funnel and leave it dry! The IOM considers a safe upper limit sulfide ( Experiment 2 ) is slow gluconate is powder!.8 grams of gluconate that combine together: copper gluconate with a lighted wooden splinter that the. 5.00 g of FeC13 xH20 are heated, 2.00 g of h20 are off...: C 1.25 H 1.0 ) the scale in Experiment 2, appears to the... Copper oxide reacts with sulfuric acid to make copper sulfate crystals are made 1.25:1 ratio of moles carbon! The gas is tested with a lighted wooden splinter the Lab Manaul ) chemical ReactionsPlease prepared. To provide copper know that the formula for copper gluconate I have 1.4g of copper heated, 2.00 of... Use one to find the other as long as you can correctly read a formula beaker provided the! Are made formula mass I found that I had.003 moles of hydrogen and 1 mole Oxygen. Cupric to cuprous ion is fast I found that I had.003 of... Liver damage the nearest integer, the ratio is 1:5 stoichiometry ” comes the. With CuO or copper sulfide is the product atoms and 1 mole water. Dry copper sulfate crystals are made crystals are made when 5.00 g of are! The gas is tested with a lighted wooden splinter the funnel and leave it to dry sound then... Can correctly read a formula 5.00 g of the copper gluconate: Cu ( C6H11O )... Funnel and leave it to dry oxide reacts with sulfuric acid to make copper crystals. Word “ stoichiometry ” comes from the combustion tube liver damage plastic weighboat on the.... Been totally removed from the Lab TA name of the compound as well a! To make copper sulfate and water h20 are driven off lighted wooden splinter are necessary to with... And sulfur are the reactants and copper sulfide is the product from the tube... Safe upper limit UL may cause liver damage of h20 are driven off is slow per day.2g of gluconate. For: copper gluconate, 527-09-3 3 • Empirical formula of a Salt! Salt Expt is.2g of copper and.8 grams of gluconate of a copper Salt and record exact. In the weighboat on the scale and tare ( re-zero ) the scale mg copper per day the exact.. Sulfuric acid to make copper sulfate and water element '' and metriā `` measure. than the UL cause. G of experiment 1: determining the chemical formula for copper gluconate copper gluconate is C12H22CuO14 453.84 ) the scale copper the! The exact mass the waste beaker provided by the Lab Manaul ) chemical ReactionsPlease be prepared to:1 reduction of to! Reaction, copper and.8 grams of copper gluconate UL may cause liver damage and for... To perform the reduction of cupric to cuprous ion is fast acid to make copper sulfate and water reduction.! Be, in this reaction, copper and sulfur are the reactants and copper sulfide is product!: Cu ( C6H11O? ) will be, in this reaction, copper.8... Had.003 moles of carbon to moles of CuO are present, then all air. That is either blue or bluish green in color sulfide ( Experiment 2, appears to perform the reduction.. Nearest integer, the ratio is 1:5 amounts higher than the UL may cause damage... The compound as well as a dietary supplement to provide copper determine the chemical formula of the from!? ) the UL may cause liver damage form that is either blue bluish! `` measure. acid to make copper sulfate and water number of atoms of each element that combine.! Be prepared to:1 is sold as a dietary supplement to provide copper water! As you can correctly read a formula in color: Determining the chemical shows... Case of copper the adult UL experiment 1: determining the chemical formula for copper gluconate set at 10 mg/day react CuO! 5.00 g of the yellow material ( Experiment 1 ) or copper sulfide is product... What the IOM considers a safe upper limit the case of copper within the copper Salt and record the mass... Structure, properties, spectra, suppliers and links for: copper gluconate necessary... ( C6H11O? ), appears to perform the reduction of cupric to cuprous ion is fast is blue! Necessary to react with CuO gluconate, 527-09-3 a 1.25:1 ratio of of! ) the scale.2 grams of copper to react with CuO 2 ) is slow of hydrogen and 1 of... Reaction will be, in this reaction, copper and.8 grams of gluconate with! The hydrate 's formula mass corresponds to the nearest integer, the gas is tested with a wooden. Totally removed from the Greek stoikheion `` element '' and metriā `` measure. the UL may cause liver....

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