The molecule of the week is Tetraethyl orthosilicate (TEOS) of which 120,000 metric tons (1 metric ton = 1000 kg) is produced annually. How many molecules of TEOS (C₈H₂₀O₄Si) are produced every year?

Q: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of KOH that will be required to…

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Q: Give the following generic chemical reaction, determine the moles of B2 needed to react with 1.25 x…

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Q: What is the theoretical yield of MgO from the combustion of 5.25 x 10^23 atoms of Mg and 4.69 x…

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Q: Thirteen grams of titanium metal react with sixty grams of bromine. (i) Calculate the mass (in gram)…

A: The balanced chemical reaction is as follows: Ti(s)+2Br2(l)→TiBr4. The mass of Ti=13 g. The mass of…

Q: What is the mass percentage

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Q: A crystal of the mineral pharmacosiderite, Fe3(AsO4)2(OH)3•5H2O, contains what percent of  oxygen by…

A: The molecular formula of the crystal pharmacosiderite is = Fe3(AsO4)2(OH)3•5H2O One molecule of the…

Q: For the reaction C + 2H2 → CH4, how many moles of hydrogen are needed to make  182 grams of methane,…

A: Here a chemical reaction is given that is  C + 2H2 → CH4. Now, we have to calculate how many moles…

Q: What mass, in grams, of C2H2 is needed to form 210.4 g of CO2? Assume excess oxygen.    2C2H2(g) +…

A: Ans. 62.16 g C2H2 required to form 210

Q: A student mixes 3.85 moles of C2H6 with 15.0 moles of O2 during an experiment. What is the maximum…

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Q: Write a balanced chemical equation based on the following description: the reaction of gaseous C₅H₄…

A: The reactants given are  1) gaseous C5H4 i.e C5H4 (g) 2) Oxygen gas i.e O2 (g) And the products…

Q: estion 3 Consider the following chemical reaction. It is mostly balanced, but missing the proper…

A: balanced chemical equation occurs when the number of the different atoms of elements in the…

Q: A chemical plant uses electrical energy to decompose aqueous solutions of NaCl to give Cl2, H2, and…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Q: What is the complete balanced reaction for the complete combustion of C8H18 in oxygen? From the…

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Q: Consider the following equation: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of…

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Q: When butanol (C₄H₉OH) is burned in oxygen, CO₂ and H₂O are the products. What is the coefficient in…

A: The products of a complete combustion reaction are carbon dioxide and water. So the complete…

Q: what mass of sodium is also produced?

A: Given :- 2Na3N → N2 + 6Na  Mass of N2 produced = 29.7 g  To calculate :-   Mass of sodium (in g)

Q: The reaction shown below is used to destroy Freon-12 (CF2Cl₂ ), preventing its release into the…

A: The mass of CF2Cl2 is .The mass of Na2C2O4 is .The balanced chemical equation is .To find the mass…

Q: Nitric acid is produced via the following equation: 3 NO2 + H2O → 2 HNO3 + NO How many grams of…

A: To calculate the grams of NO2 are required to produce 4.0 grams of HNO3 . First we have to convert…

Q: Combustion of a hydrocarbon in a limited supply of air produces CO in addition to CO₂ and H₂O. When…

A: Combustion of 2.33 g of a hydrocarbon C2H5 in air produces 2.24 g CO, 3.53 g CO2 and 3.61 g H2O…

Q: The mineral bauxite, which is mostly Al2O3, is the principal industrial source of aluminum metal.…

A: Given,  7.00 ton of Al2O3  1 ton = 907184.74 grams  7 ton = 7x907184.74 grams

Q: White phosphorus (P4) is used to produce phosphorus oxides, such as P4O10. How many kilograms of…

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Q: A mixture of C2H2 and CH4 has a total mass of 251.8 g. When this mixture reacts completely with…

A: Given:Total mass of mixture of C2H2 and CH4 = 251.8 g.Total mass of CO2 and H2O = 1138.0 g.Molar…

Q: Given the following equation: 2 KClO3 → 2 KCl + 3 O2 How many grams of O2 are produced when 56.00…

A: According to Law of conservation of mass, we balanced the chemical reaction. In any chemical…

Q: Given the following equation: 2 C4H10 + 13 O2 → 8 CO2 + 10 H2O How many grams of C4H10 are needed…

A: Given data: Mass of H2O produced = 67.20 g

Q: 1.How many moles of CuO can be produced from 1.11 mol of Cu2O in the following reaction?…

A: The amount of substance is usually defined in terms of mole. The mole is the SI unit of the quantity…

Q: Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) calculate the moles of…

A: We have given that  Starting with the following equation, Fe2O3(s) + Al(s) ------->  Fe(s) +…

Q: Cryolite, Na, AlF6(s), an ore used in the production of aluminum, can be synthesized using aluminum…

A: To solve this problem, we need to balance the given chemical equation, determine the limiting…

Q: The mineral bauxite, which is mostly Al2O3, is the principal industrial source of aluminum metal.…

A: 1 ton = 106 g So, 9 ton = 9 x 106 g

Q: If you react 6.7g of iron oxide with 4.5g of aluminum, what is the theoretical yield of aluminum…

A: To solve this problem we have to find the limiting reactant first . Then we will  calculate the…

Q: If 6.8 g of a hydrocarbon that is 83.2% C by mass is burned with O2 to make CO2 and H2O,  what mass…

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Q: How many grams of O2 will be consumed during the formation of 13.67 grams of Fe2O3? Report your…

A: Mass of Fe2O3 = 13.67 g

Q: For the reaction C + 2H2 → CH4, how many grams of hydrogen are required to produce 5.8 moles of…

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Q: Starting with the following equation, Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) calculate the moles of…

A: Given :-  Fe₂O₃(s) + Al(s) → Fe(l) + Al₂O₃(s) mass of Fe = 755 g  To be calculated :-  number of…

Q: Silver sulfide, Ag2S, also called argentite, is an economically important silver ore. If a silver…

A: From the molar masses, we can estimate the amount of silver produced per day from Argentine (Ag2S)…

Q: For the reaction 2HNO3 + Mg(OH)2 → Mg(NO3)2 + 2H₂O, how many grams of magnesium nitrate are produced…

A: Mass of nitric acid(HNO3) = 4 gMolar mass of HNO3 = 63.01 g/molMolar mass of Mg(NO3)2 = 148.31…

Q: Consider the following equation: KOH(s) + CO₂(g) → K₂CO₃(s) + H₂O(l) Calculate the mass in grams of…

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Q: A mixture of C2H2 and CH4 has a total mass of 164 g. When this mixture reacts completely with excess…

A: Given,Total mass of mixture of C2H2 and CH4 = 164 g.Total mass of mass of CO2 and H2O = 746.6 g.…

Q: What is the theoretical yield of SO3SO3 produced by 2.02 gg of SS? Express your answer numerically…

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Mole Concept

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 be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.