25. When aluminum oxide is electrolyzed in the industrial process for the production of aluminum metal, aluminum is produced at one electrode and oxygen gas is produced at the other electrode. For a given quantity of electricity, what is the ratio of aluminum moles to moles of oxygen gas? (A) 1:1 (B) 2:1 (C) 2:3 (D) 4:3

Q: 2. What is the mole ratio of oxygen to carbon dioxide in the combustion reaction for propane?

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Q: 23. In the following reaction: 2 PbO(s) + O2(g) → 2 PbO2(s) PbO is the reducing agent and O2 is the…

A:

Q: (7A) Ni(CIO4)2 is flammable and is a carcinogen. Name the compound Ni(CIO4)2. O a nickel (II)…

A:

Q: Which of the following diagrams represents a chemicalchange?

A: The substance in a chemical reaction undergoes chemical change means the bonds are broken and new…

Q: A sample of hydrate was heated thoroughly. How many waters of hydration are there if the anhydrous…

A:

Q: Balance the equation below which uses imaginary elements. They still follow the usual…

A: Balanced Equation 2Bf2X2Ki3 + L2  -> Bf2X4Ki6 + 2BfL Yes you did it right.

Q: copper and silver nitrate react and recovers 5.2 g AG.  After mass to mass stoichiometry maximum…

A: Given that:                         Amount of silver recovers = 5.2 g            Theoretical yield…

Q: If 5.78 moles of calcium nitrite reacts with excess cesium, how many moles of cesium nitrite can be…

A:

Q: What are the distinguishing properties of acids andbases?

A: Acid has a pH of less than 7, it tastes sour, and soluble in water.

Q: n determination of Sulfur as Barium Sulfate, Why is digestion not necessary in this determination

A: Given: To explain determination of Sulfur as Barium Sulfate, Why is digestion not necessary?

Q: The source of oxygen that drives the internal combustionengine in an automobile is air. Air is a…

A: (a) The balanced equation for the reaction of nitrogen and oxygen giving nitric oxide gas is, The…

Q: Which is correct and which is incorrect from the following sentences? Proposition True False (a) The…

A: The solution is shown below

Q: Dinitrogen tetroxide, N2O4 is an important component of rocket fuels. At 25 ℃, N2O4 (92.01 g/mol)…

A: Given that, At 25 ℃, N2O4(92.01 g/mol) partially dissociates into NO2 (46.01 g/mol). In an…

Q: Bacterial digestion is an economical method of sewage treatment. The reaction is an intermediate…

A:

Q: 6. How many moles of calcium will react with 2.00 grams of:

A: the balanced equation of Ca with each acid is given below  a. Ca +  2 HCl  -------- >  CaCl2   +…

Q: Assuming the full 0.01924 moles of tin(Il) reacts, what mass of tin was present in the original ore?…

A: Here we have to determine the mass of tin present in ore if full 0.01924 mole of Sn2+ reacts.  This…

Q: o Oxidation of iron metal in the atmosphere is responsible for the formatic practice to prevent rust…

A: Oxidation of iron metal in the atmosphere is responsible for the formation of rust.

Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

A: In this question, we want to balance the given unbalanced equation.  You can see details Solution…

Q: What mass in grams of CO, is evolved in the com- plete decomposition of a 2.300-g sample that is…

A:

Q: Balance the chemical equation below using the smallest possible whole number stoichiometric…

A: Balanced equation means number of each atom in both side are present in equal number. So,

Q: Sodium fluoride which is used in toothpaste as a source of fluoride, can be produced in the reaction…

A: Sodium fluoride is used in toothpaste as source of fluoride. It consists of sodium as well as…

Q: The US environmental protection agency places limits on the quantities of toxic substances that may…

A: Given: Amount of hexavalent chromium= 0.50 mg/L. Mass of hexavalent chromium = 0.50 mg Volume of…

Q: Hydrazine 1N2H42 and dinitrogen tetroxide 1N2O42 form a self-igniting mixture that has been used as…

A:

Q: A 0. 4054 g solid organic sample containing covalently bound bromide and no other halogens was…

A: Given,  Mass of sample = 0.4054 g = 0.4054g × 1000 mg/ 1g = 405.4 mg Mass of silver bromide produced…

Q: A student is given a 1.3002 g of an unknown copper compound. Following isolation by displacement by…

A:

Q: Titanium is a strong, slightly corrosion resistant metal and is used in rockets, airplanes, jet…

A: Molar mass of Ti=47.86g/mol given mass of Ti=791×106g Molar mass of Mg=24.305g/mol Given mass of…

Q: The electrolysis of molten sodium chloride or of aqueous sodium chloride produces chlorine.Calculate…

A: The electrolysis of salt involves two phenomenons which are reduction and oxidation of ions of salt.…

Q: Which of the following compounds is not a product of the reaction of sodium ?hypochlorite with…

A:

Q: 14) If 0.600 moles of NH3 were produced, how many moles of H2 are required?

A: Reaction involved for formation of NH3 N2(g)+3H2(g)------>2NH3 No. of moles of NH3 produced=0.600…

Q: Q14. For the emerging sodium-ion batteries, there are a number of cathode materials under…

A: Theoretical capacity: Qtheoretical = (nF) / (3.6*Mw) mAh g-1..........(1)  Molar mass FeOF = 90.8…

Q: Which of the following is incorrect?   A. Fluorine will always have an oxidation number of -1 in all…

A: Given  1)   Which of the following is incorrect?   A. Fluorine will always have an oxidation…

Q: If 5.36 moles of Aluminum react sufficient oxygen, how many moles of Al2O3  should form?

A: moles of Al2O3  should form, If 5.36 moles of Aluminum react sufficient oxygen will be:

Q: How many grams of carbon dioxide can form when a mixture of 5.00 grams ethylene and 5.70 grams of…

A: Combustion is the process of burning in aerobic  condition . Products of combustion are water and…

Q: - When 2.6 grams of acetylene is combusted in an amount of oxygen (8 grams), The result is .…

A: • Here, it has been said that 2.6 grams of acetylene is combusted with 8.0 grams of oxygen. • As…

Q: A student is given a 1.3308 g of an unknown copper compound. Following isolation by displacement by…

A: Given,      Mass of the unknown Copper Compound =1.3308 g      Mass of Copper (Cu) Metal recovered…

Q: According to the following reaction how many grams of hydrogen would be needed to produce 5.450×10^3…

A: H2 (g) + 1/2 O2 (g) ---> H2O (l)  ∆H = -285.83 KJ

Q: Titanium is a strong, slightly corrosion resistant metal and is used in rockets, airplanes, jet…

A: We have to find the number of moles first.   No of moles of TiCl4 = Mass / Molecular mass of TiCl4…

Q: If 10.7 kg Al reacts with an excess of Fe,O3, how many kilograms of Al,0, will be produced?

A: Given :-  2Al(s) + Fe2O3(s)  -----> Al2O3(s)  + 2Fe(l)  Mass of Al = 10.7 kg  To be calculated :-…

Q: II. Consider the given for nos. 5 to 7: SnO2(s) + 2 H2(g) → Sn(s) + 2 H2O(1) Determine: _5) the mass…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Calcium metal can be obtained by the direct electrolysis of molten Cacl2, at a voltage of 3.2 volts.…

A: Given , mass of calcium = 4.47 kg voltage required = 3.2 V

Q: 9. How many kilograms of iron can be obtained from 635 pounds of an ore that is 72.0% hematite,…

A:

Q: u. Magnesium and sulfuric acid V. Calcium sulfide and nitric acid w. Reacting magnesium and chlorine…

A: U.  Magnesium with Sulfuric acid: Magnesium (Mg) reacts with sulfuric acid to form magnesium sulfate…

Q: A short description of how nitrogen was discovered.

A:

Q: What is the definition of the state element?

A: Defination of element ---- The substance which can not be decopmpose into simpler substance by using…

Q: What would Charlie adjust to make the number of atoms in the reactants the same as the number of…

A: The chemical equation must be balanced to follow the law of conservation of mass which means mass of…

Q: Give the STOICHIOMETRIC TABLE for SO2+1/202_>SO3| need complete table clearly

A: With help of stoitiometric table we can set up equation for concentration initially and amiunt Left…

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.