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Chemical Reaction Questions and Answers | Homework.Study

View Answer. When H B r ( g ) reacts to form H 2 ( g ) and B r 2 ( l ), 36.3 kJ of energy are absorbed for each mole of H B r ( g ) that reacts. Write the thermochemical equation for the reaction. View Answer. When heated, a typical metal chlorate decomposes to produce oxygen and the metal chloride.

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Which of the following is not a carbonate ore? - Vedantu

The extraction of metal from an ore is not economically feasible. Complete answer: Dolomite contains calcium carbonate and magnesium carbonate. Thus, it is a carbonate ore. We can write the chemical formula of Dolomite as either. CaC O 3, MgC O 3. or. CaMg ( C O 3) 2. Calamine is zinc carbonate.

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chemical formula for hematite - jakkalsvallei

What Is The Chemical Formula And Identity Of Hematite. Chemical Name And Formula Of Iron Ores. The chemical formula for iron iii oxide is fe2o3his compound is also called hematite, iron ore and specularite hematite is a mineral naturally found on earth and appears as a gray or reddish compoundron iii oxide results naturally when iron and oxygen come into contact at high temperatures.

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300+ TOP CHEMISTRY Interview Questions and Answers

If this answers, your question HCl Zn is hydrogen, chloride, and zinc. Zn + 2HCl -> ZnCl2 + H2. HCl is also known hydrochloric acid. It reacts with zinc to produce Zinc Chloride (a white crystalline solid) and hydrogen gas. 68. Two common isotopes of carbon are carbon-12 and carbon-14.

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3 Minerals - An Introduction to Geology

The name of the chemical compound is calcium carbonate, where calcium is Ca and carbonate refers to the molecular ion CO 3-2. The mineral olivine has the chemical formula (Mg,Fe) 2 SiO 4, in which one silicon and four oxygen atoms are bonded with two atoms of either magnesium or iron. The comma between iron (Fe) and magnesium (Mg) indicates the ...

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What is the percentage by mass of iron (Fe) in the mineral ... - Socratic

69.9% to three significant figures. First find the total mass of the compound 3xx 15.999 = 48 grams for Oxygen 2 xx 55.8 = 111.6 grams for Iron adding these gives 159.6 grams per molecules Fe_2O_3 Now divide the mass of Iron by the total mass for the compound. 111.6/159.6 = .6992481 Change this to a percentage by multiplying by 100 and round off to three significant figures gives 69.9 % Iron.

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Ferric Chloride - Properties, Preparation and Applications - VEDANTU

Ferric chloride is an inorganic compound with formula FeCl3 which has numerous industrial, pharmaceutical and laboratorial uses. In this article we will discuss ferric chloride structure with its physical and chemical properties, ferric chloride test for phenols and applications in various fields. Ferric chloride is named as iron chloride.

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Empirical formula calculator - How to find empirical formula

Step 3: Find the simplest formula. 1: 1.999: 1. Step 4: Finding empirical formula. C: H: O. 1: 1.99: 1. So, the simplest formula of the compound is CH2O. Also, our online empirical formula calculator considers these equations for finding the simplest positive integer ratio of atoms present in a compound (chemistry).

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What is Ore? - Definition, Types, Uses & Examples - Study

An ore is a special type of rock that contains a large enough amount of a particular mineral (usually a metal) to make it economically practical to extract that mineral from the surrounding rock.

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Answered: What Is CHEMICAL COMPOSITION? | bartleby

Concept explainers. Article. Mole Concept. arrow_forward. Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called 'mole'. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can b..

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Metals and Non-metals Class 10 Extra Questions with Answers Science ...

Compound X and aluminium are used to join railway tracks. (a) Identify the compound X (b) Name the reaction (c) Write down its reaction. [NCERT Exemplar] Answer: (a) Compound X must be iron (III) oxide, Fe 2 O 3. (b) The reaction is known as 'thermite reaction' or 'aluminothermy'.

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iron | Element, Occurrence, Uses, Properties, & Compounds

iron (Fe), chemical element, metal of Group 8 (VIIIb) of the periodic table, the most-used and cheapest metal. atomic number26 atomic weight55.847 melting point1,538 °C (2,800 °F) boiling point3,000 °C (5,432 °F) specific gravity7.86 (20 °C) oxidation states+2, +3, +4, +6 electron configuration[Ar]3d64s2 Iron makes up 5 percent of Earth's crust and is second in abundance to aluminum ...

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Samacheer Kalvi 12th Chemistry Solutions Chapter 1 Metallurgy - Donuts

Write the application of Iron (Fe). Answer: 1. Iron is one of the most useful metals and its alloys are used everywhere including bridges, electricity pylons, bicycle chains, cutting tools and rifle barrels. 2. Cast iron is used to make pipes, valves and pumps stoves etc. 3. Magnets can be made of iron and its alloys and compounds. 4.

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Answered: The mole is to the chemical amount as. | bartleby

A 0.9882 gram sample of iron ore is dissolved, the iron reduced to Fe2+, and the solution was. A: #1: Given the mass of the iron ore sample = 0.9882 g Volume of 0.02065 M KMnO4 used for the. Q: If operators X and Y have a common eigenfunction, which of the following statement is TRUE?

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What Is the Chemical Formula for Limestone? - Reference

Pure limestone is made up of two component minerals: calcium carbonate and calcium-magnesium carbonate. The chemical formula for calcium carbonate is CaCO3. The chemical formula for calcium-magnesium carbonate is CaMg (CO3)2. Calcium carbonate is commonly known as calcite,and calcium-magnesium carbonate is commonly known as dolomite.

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Iron Oxide - Structure, Properties, Preparation and Uses - VEDANTU

Iron oxide, which is also called ferric oxide, is an inorganic compound having the chemical formula Fe2O3. It is one of the 3 major oxides of iron, and the remaining two being iron (II) oxide (FeO), which is the rare iron (II, and III) oxide (Fe3O4), and also naturally takes place as the mineral magnetite.

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What Commodities Are the Main Inputs for the Electronics Sector?

The Investopedia Team. Updated August 30, 2022. Reviewed by. Marguerita Cheng. A variety of metals, plastics, raw materials and chemicals are used by the electronics industry. Some of the more ...

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What Is The Meaning Of Ore - Realonomics

Jan 16, 2022Ore is a deposit in Earth's crust of one or more valuable minerals.The most valuable ore deposits contain metals crucial to industry and trade like copper gold and iron. What language is the word ore? "a metalliferous mineral or rock " especially one worth mining 12c. a merger of Old English ora "ore unworked metal" (related to eorþe "earth " see earth (n.) and cognate with Low ...

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inorganic chemistry - What is chemical formula of Bauxite? - Chemistry ...

An ore is an impure form of mineral, so it can't be given exact chemical formula. Whereas a mineral is pure compound(in general, and can be used to obtain pure elements like metals) so it has an exact chemical formula.Minerals which can used to obtain the metal profitably are called ores.All minerals are not ores but all ores are essentially ...

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Iron ore - Wikipedia

Iron ores are rocks and minerals from which metallic iron can be economically extracted. The ores are usually rich in iron oxides and vary in color from dark grey, bright yellow, or deep purple to rusty red. The iron is usually found in the form of magnetite (Fe 3 O 4, 72.4% Fe), hematite (Fe 2 O 3, 69.9% Fe), goethite (FeO(OH), 62.9% Fe), limonite (FeO(OH)·n(H 2 O), 55% Fe) or siderite (FeCO ...

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What Raw Materials do Auto Manufacturers Use? - Investopedia

Steel is produced from iron ore and is perhaps the most widely used input in auto manufacturing. On average, 900 kilograms of steel is used in every car. ... A hydrocarbon is an organic chemical ...

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What chemical compound is Fe2O3? - Answers

The chemical formula Fe2O3 is for the chemical compound known as Iron (III) oxide. Its melting point is 2,851 degrees Fahrenheit. Name for chemical compound Fe2O3? Iron (III)Oxide What is the...

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Abeka Chemistry Chapter 11 Flashcards | Quizlet

Answers will vary. Permanent hard water contains the fulfate of calcium, magnesium, or iron (II), whereas temporary hard water contains the bicarbonate. Show by an equation one cause of boiler scale. Ca (HCO₃)₂ (aq) →∆→ CaCO₃ (s) + CO₂ (g) + H₂O (l) Explain how a cation-exchange resin softens water. Positively charged ions such ...

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Finding the empirical formula of iron oxide? | Socratic

For oxygen, you will have. 32.72g ⋅ 1 mole O 16.0g = 2.045 moles O. To determine the empirical formula of the iron oxide, you need to find the smallest whole number ratio that exists between the two elements in the compound. To do that,divide both values by the smallest one. For Fe: 1.534moles 1.534moles = 1. For O: 2.045moles 1.534moles = 1 ...

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What is "Fool's Gold?" - USGS

A mineral is a naturally occurring inorganic element or compound having an orderly internal structure and characteristic chemical composition, crystal form, and physical properties. ... 871 pounds of lead 502 pounds of zinc 950 pounds of copper 2,692 pounds of aluminum 21,645 pounds of iron ore 11,614 pounds of clays 30,091 pounds of salt ...

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What is Salt in Chemistry? - Definition & Formula - Study

In chemistry, a salt is an ionic compound which is made up of two groups of oppositely charged ions. The ion with a positive charge is called a cation, and the one with a negative charge is called ...

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What is Oxidation? | Examples, Reactions and Process - Study

The iron atom loses its electrons to form an ion with 3+ charges, There is a change in the oxidation state of iron, from 0 to +3. This takes place in the presence of atmospheric oxygen and moisture.

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Stoichiometry Questions and Answers | Homework.Study

A rebreathing gas mask contains potassium superoxide, KO_2, which reacts with moisture in the breath to give oxygen. 4 KO_2 (g) + 2 H_2O (l) to 4 KOH (s) + 3 O_2 (g) Estimate the grams of potassium...

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Magnetite & Lodestone | Mineral Photos, Uses, Properties - Geology

Use of Magnetite as an Ore of Iron. Most of the iron ore mined today is a banded sedimentary rock known as taconite that contains a mixture of magnetite, hematite, and chert. Once considered a waste material, taconite became an important ore after higher grade deposits were depleted. Today's commercial taconites contain 25 to 30% iron by weight.

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Important Questions for Class 12 Chemistry Chapter 6 General Principles ...

Differentiate between a mineral and an ore. (All India 2011) Answer: Mineral: The naturally occuring chemical substances in form of which the metals occur in the earth along with impurities are called minerals. Ore: The mineral from which metal can be extracted conveniently and economically is called an ore.

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Important Chemical Compounds- Their Common Names, Formula ... - PendulumEdu

Chemical Compounds/Elements. Chemical Formula. Uses. Heavy water. Deuterium Oxide. D 2 O. It is used in nuclear reactors, as a neutron moderator. Hypo Solution. Sodium Thiosulphate pentahydrate. Na 2 S 2 O 3.5H 2 O. It is used for both film and photographic paper processing. Hematite. Iron (lll) Oxide/ Ferric Oxide. Fe 2 O 3

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Composition of cement - Penn State College of Engineering

Iron, Fe 2 O 3: from from clay, iron ore, scrap iron and fly ash; Gypsum, CaSO 4.2H 2 0: ... Because of the complex chemical nature of cement, a shorthand form is used to denote the chemical compounds. The shorthand for the basic compounds is: Compound: Formula: Shorthand form: Calcium oxide (lime) Ca0: C: Silicon dioxide (silica) SiO 2: S:

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What is Fe3O4 chemical name? | AnswersDrive

iron (II,III) oxide is the chemical compound with formula Fe3O4. It occurs in nature as the mineral magnetite. It is one of a number of iron oxides, the others being iron (II) oxide (FeO), which is rare, and iron (III) oxide (Fe2O3) also known as hematite. People also ask, what is the stock system name for the compound Fe2O3?

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100 Chemistry Questions and Answers - Basic Chemistry - TEW

Answer: Ore of iron, Fe203. 96) Which metal has the density is less than that of water? Answer: Sodium. 97) Which mineral is used in jewellery? Answer: Garnet. 98) A compound contains 28 percent of nitrogen and 72 percent of metal by weight. 3 atoms of metal combine with 2 atoms of N. Find the atomic weight of metal. Answer: 24.

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Chemical Reactions of Copper and Percent Yield Key

What copper compound is present in the beaker now (10)? Your instructor will tell you whether you should use Zn or Al for the reduction of Cu (II) in the following step. A. Zinc In the hood, add 2.0 g of 30-mesh zinc metal all at once and stir until the supernatant liquid is colorless. Describe the reaction on your report sheet (11).

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chem 100 quiz 8 chapter 6 Flashcards | Quizlet

The chemical formula CH2O can be classified as: Select one: a. empirical only. b. empirical, possibly molecular. Correct ... A 500. gram iron ore sample was determined to contain 242 grams of iron. What is the mass percent of iron in the ore? ... What is the molecular formula of a compound given the molar mass of the compound is 186.5 grams and ...

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What Is The Meaning Of Ore - Realonomics

Ore is a deposit in Earth's crust of one or more valuable minerals.The most valuable ore deposits contain metals crucial to industry and trade like copper gold and iron. What language is the word ore? "a metalliferous mineral or rock " especially one worth mining 12c. a merger of Old English ora "ore unworked metal" (related to eorþe "earth " see earth (n.) and cognate with Low ...

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03 0620 32 3RP - GCE Guide

4 CE 2020 062032F20 2 Iron is extracted by heating a mixture of coke (carbon), limestone and iron ore in air in a blast furnace. A diagram of the blast furnace is shown. coke (carbon) + limestone + iron ore air in molten iron slag firebrick lining (a) Name the ore of iron added to the blast furnace. [1] (b) The impurities in the iron ore are removed as slag. (i) What information in the diagram ...

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Is iron ore a compound or mixture? - Answers

It is a mixture of an Iron compound and a rock substrate. Iron ores are usually rich in Iron Oxides (a compound) and minerals. ... Is iron ore a compound or mixture? Wiki User. ∙ 2010-09-22 12:24:55. Study now. See answer (1) Best Answer. Copy. It is a mixture of an Iron compound and a rock substrate. Iron ores are usually rich in Iron Oxides ...

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Answered: A 1.00 g sample of an iron ore is. | bartleby

Science Chemistry Q&A Library A 1.00 g sample of an iron ore is dissolved in acid and then reduced to Fe²⁺. It was then titrated against 0.025 M KMnO₄ solution and used 47.5 mL to reach the end point. Calculate the %Fe₃O₄ (231.54 g/mol) of the ore sample. MnO₄⁻ + 5 Fe²⁺ + 8 H⁺ Mn²⁺ + 5 Fe³⁺ + 4 H₂O.

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