WhatsApp)
Work out the formula for the following ionic chemicals Zinc Chloride ZnCl 2; ... What will be the loss in mass on heating copper carbonate until no further reaction takes place? ... What mass of copper oxide is produced? (b) What amount of nitrogen dioxide is formed? The limiting reactant and the reactant in excess: Theoretical ...
Samples of copper ore, such as malachite, could be shown, if available. For the second question, work out the concentration of copper in, say, testtube 3: Concentration Cu (as Cu 2+) = 4/10 x 1 M = M. Work out the concentration of copper ions when 5 g of copper carbonate is dissolved and made up to 100 cm 3 of solution: (Formula mass of ...
Nov 30, 2017· This is a great way to supplement potassium while raising your pH. Potassium hydroxide is very strong base, meaning that is is an excellent way to raise pH. Potassium carbonate can also be used but is a carbonate, so it''s not appropriate unless your system trends to .
ZINC CARBONATE AND RELATED COPPER CARBONATE ORES AT OPHIR, UT. By G. F. LOUGHLIN. INTRODUCTION. *. Although the Ophir mining district, Ut, has long been an im portant source of lead carbonate and of lead and zinc sulphide ores, zinc carbonate ore was not shipped from it until 1913. On July 23,
Determination of the amount of water of crystallisation in hydrated sodium carbonate Theory 2 Hydrated sodium carbonate has the formula Na 2CO 2O, where x is the number of molecules of water of crystallisation present.
For example, a perfect copper concentrate for an ore containing copper only as chalcocite would run % copper, but if the smelter is best equipped to handle a 36% copper concentrate, then for milling purposes 36% copper may be considered the perfect grade.
Copper(II) carbonate or cupric carbonate is a chemical compound with formula CuCO 3. At ambient temperatures, it is an ionic solid (a salt) consisting of copper(II) cations Cu 2+ and carbonate anions CO 2− 3. This compound is rarely encountered because it is difficult to prepare and readily reacts with water moisture from the air.
Large electrically driven ball mills used for grinding ore to a size suitable as feedstock to the ... These challenges are met by the application of energy to accomplish the work that includes the direct use of electricity, fossil fuel, and manual labor. ... as the amount of electricity
Start studying formulae, equations and amounts of substance. Learn vocabulary, terms, and more with flashcards, games, and other study tools. ... 40g of copper (II) oxide b) 212g of sodium carbonate c) 112g of carbonate monoxide d) of chlorine ... work out the percentage of water of crystallisation in: a) b) Ni(NO3) ...
CHEMISTRY THINGS I DONT KNOW. STUDY. PLAY. ... how do you work out the number of moles if you are given a mass. MASS ... eg if you can copper nitrate, mix copper carbonate and nitric acid. how can you make an insoluble salt. a precipitation reaction using the 2 solutions with the ions you need
Apr 18, 2010· Homework Statement A mass of iron ore weighing was dissolved in dilute acid and all the iron was converted to Fe2+(aq). The iron II solution required of KMnO4 for titration. Calculate the percentage of iron in the ore. Homework Equations Wrote out .
.An ore contains 10% copper. Work out how much copper you would get from 50kg of that ore? Ask for details ; Follow Report by Royet019304 6 minutes ago Log in to add a comment What do you need to know? Ask your question.
Part Three Resources and Technology, Chapter 5 World Copper Resources, CONTENTS Page ... Commercial copper ore deposits today contain from to 6 percent copper, or between 100 ... In carbonate deposits, the copper occurs with carbon and oxygen. In silicate mineral deposits, the copper is .
This page describes with fully worked out examples how to calculate the composition of a compound in terms of the % by mass of each element in a compound. It doesn''t matter what the nature of the compound is it is irrelevant whether its an ionic compound or a covalent compound.
Jan 14, 2016· Volumetric Analysis (6) Estimating the % of copper in brass–a redox titration. ... So we need to neutralise the solution with sodium carbonate, a non oxidising compound. ... Work out the mass of copper in this amount. Mr (Cu) = g/mol therefore mass of copper is. ...
Chalk is almost pure calcium carbonate. We can work out its purity by measuring how much carbon dioxide is given off. 10 g of chalk was reacted with an excess of dilute hydrochloric acid. liters of carbon dioxide gas was collected at standard temperature and .
Iodometric determination of copper is based on the oxidation of iodides to iodine by copper (II) ions, which get reduced to Cu +. Comparison of standard potentials for both half reactions (Cu 2+ /Cu + E 0 = V, I 2 /IE 0 = V) suggests that it is iodine that should be acting as oxidizer.
Different amounts of high purity calcium carbonate standard (% purity, carbon content of %) are used to calibrate the instrument. The approximate amounts of calcium carbonate used for the sixpoint calibration are; g, g, g, g and g. An empty carbonfree combustion boat is analyzed as a blank for the calibration
The student heated each metal carbonate for five minutes. Table 3 shows the results. Table 3 Metal carbonate Mass of metal carbonate at start in g Mass of solid after heating for 5 minutes in g Observations Copper carbonate Limewater turns cloudy Magnesium carbonate Limewater turns cloudy Potassium carbonate ...
Finding the relative formula mass of an unknown carbonate. Procedure. Weigh out about g of the unknown carbonate; Dissolve the unknown carbonate in 50 cm 3 of 2M HCl (an excess of acid it will react with all of the carbonate and there will be some acid left over) Make up the reaction mixture to 250 cm 3 in a volumetric flask
W/S Ratio.—The mixture of ore and water in which the process of concentrating the valuable minerals is performed is always termed a constitution can be expressed by stating that it contains a certain percentage of solid particles or " solids ", but just as common a method of describing the proportion of water to ore is by expressing it as a Water/Solids or W/S ratio, the amount ...
CopperAmmonia Complex . When concentrated ammonia solution (ammonium hydroxide) is added to a clear, light blue, aqueous solution of copper(II) chloride, a powdery, light blue precipitate of copper(II) hydroxide forms. Further addition of ammonia causes the copper ion to go back into solution as a deep blue ammonia complex.
Jan 12, 2020· They will then be asked to write down the complete word equations for the reactions of copper, iron and zinc with carbon. The mark scheme for this is provided on the PowerPoint presentation for students to mark and correct their work once complete. Lastly, students need to be able to work out the amount of metal present in an ore.
• All working must be shown. ... and reweighing was carried out three times. The results are set out in Table 3. Table 3 . Mass of crucible / g . ... Use the data in Table 3 to calculate the mass of strontium carbonate in the original ore sample. Give your answer to an appropriate precision.
WhatsApp)