BALANCE EACH EQUATION BEFORE SOLVING ANY PROBLEMS. SHOW ALL WORK. 1. ___Cu + ___O2 ___CuO a. If 101 grams of copper is used‚ how many moles of copper (II) oxide will be formed? b. If 5.25 moles of copper are used‚ how many moles of oxygen must also be used? c. If 78.2 grams of oxygen react with copper‚ how many moles of copper (II) oxide will be produced? 2. ___C4H10 + ___O2 ___CO2 + ___H2O a. How many moles of butane‚ C4H10‚ are needed to react with 5.5 moles of oxygen? b. How many
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Q. 7. Ammonium salts decomposes on heating. What other property do ammonium salts have in common ? Q. 8. The following reactions are carried out : A: Nitrogen + metal → compound X B: X + water → ammonia + another compound C: Ammonia + metal oxide → metal + water + N2. (1) One metal that can be used for reaction A is magnesium. i. Write the formula of the compound X formed. ii. Write the correctly balanced equation for reaction B where X is the compound formed. iii. What property of ammonia
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furnace is a huge‚ steel stack lined with refractory brick. The purpose of the blast furnace is to chemically reduce and physically convert the iron oxide in to liquid iron called “hot metal” Three substances are needed for this extraction and the combined mixture of them is called the “charge”: Haematite (iron ore): contains sand with iron oxide (Fe2O3) Limestone: calcium carbonate Coke: mainly carbon They are put
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oxygen: Burns brightly when heated in air to form a white powder of ionic magnesium oxide Mg2+O2- when heated strongly in air. 2Mg(s) + O2(g) ==> 2MgO(s) Reaction of oxide with water: It is slightly soluble in water‚ and is a basic oxide forming an alkaline solution of magnesium hydroxide Mg2+(OH-)2‚ of about pH12. MgO(s) + H2O(l) ==> Mg(OH)2(aq) Reaction of oxide with acids: Behaves as a basic oxide dissolving to form the chloride‚ sulphate and nitrate salt in the relevant dilute acid
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hydrogen ions. The metal is‚ of course‚ oxidised to positive metal ions because it loses electrons. But nitrate ions are also easily reduced to products like nitrogen monoxide and nitrogen dioxide. So metals reacting with nitric acid tend to give oxides of nitrogen rather than hydrogen. If the acid is relatively dilute‚ you tend to get nitrogen monoxide‚ although this immediately reacts with oxygen in the air to make brown nitrogen dioxide. Concentrated nitric acid gives
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Mini-Report: How Do Scientists Report Data? “Determination of the Empirical Formula of an Unknown Lead Oxide” By: Dr. C. Steven Joiner In this paper‚ they walk through and explain the process known as smelting. The experiment demonstrates the historical process known as smelting and could theoretically be used to determine the empirical formula of other metal oxides found in nature. This paper explains how the process of smelting and how metals can be extracted from their ores. This is because
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atmospheric condition i.e.‚ moist air‚ carbon dioxide form undesirable compounds on the surface is known as corrosion‚ The compounds formed are usually oxides . Rusting is also a type of corrosion but the term is restricted to iron or products made from it .Iron is easily prone to rusting making its surface rough. Chemically‚ rust is a hydrated ferric oxide Titanic‘s bow exhibiting microbial corrosion damage in the form of ‘rusticles’ Rusting an Electrochemical Mechanism ; Rusting may be explained by an
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Reflectance Calculated Stability Factor SOLE HEATED OVEN: (52/2) % Moisture % - 6 Mesh BDT ET Contraction 52/2 DRY BASIS: 27.45 9.47 63.08 14‚078 7821 0.86 MAF MINERAL ANALYSIS: Silicon Dioxide SiO2 Aluminum Oxide Al2O3 Iron Oxide Fe2O3 Calcium Oxide CaO Magnesium Oxide MgO Sodium Oxide Na2O Potassium Oxide K2O Titanium Dioxide TiO2 Phos. Pentoxide P2O5 Sulfur Trioxide SO3 DRY BASIS 55.75 26.81 7.39 1.70 1.03 0.56 2.59 1.33 0.37 1.27 15‚551
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1. Ozone (O3) in the atmosphere can react with nitric oxide (NO): O3(g) + NO(g) ( NO2(g) + O2(g)‚ with (H( = -199 kJ/mol‚ (S( = -4.1 J/K·mol. Calculate the (G( for this reaction at 25(C. A. 1020 kJ/mol B. -1.22 ( 103 kJ/mol C. 2.00 ( 103 kJ/mol D. -1.42 ( 103 kJ/mol E. -198 kJ/mol 2. For the reaction H2(g) + S(s) ( H2S(g)‚ (H( = -20.2 kJ/mol and (S( = +43.1 J/K·mol. Which of these statements is true? A. The reaction is only spontaneous
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population‚ is factors contributing toward the growing air pollutants. In today’s time it is critical that solutions must be found to better the air. The main and major air pollutants found in most city areas are carbon monoxide‚ nitrogen oxides‚ sulfur oxides‚ hydrocarbons‚ and particulate matter‚ liquid or solid form. These pollutants are isolated throughout the world’s atmosphere in areas high enough to increasingly cause serious health risks. Serious health problems can take place rapidly when
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