Thermite reaction is necessary to produce molten iron. This reaction involves Fe3O4 and Al and is described by:  8 Al + 3 Fe3O4  -> 9 Fe + 4 Al2O3 If 198.5 g Al and 365.5 g Fe3O4 are used, what mass of the excess reagent remains unused at the end of the reaction?

Q: In the reaction between aluminum and fluorine, 30.0 grams of the product is experimentally obtained…

A: As the  aluminum is the limiting reactant then the yield of reaction is depend upon the moles of…

Q: 2Ca + O2 -> 2CaO 3.80 g Ca and 2.90 g O2 is allowed to react and 5.20 g of CaO is formed. q1:…

A: Given: Mass of calcium = 3.80 g Mass of O2 = 2.90 g Actual yield of CaO = 5.20 g Known: Molar mass…

Q: An important reaction that takes place in a blast furnace during the production of iron is the…

A: Balanced chemical reaction between Fe2O3 and CO

Q: Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog: H2(g)…

A: Given, mass of H2 = 11.3 g we know, molar mass of H2 = 2.016 g/mol molar mass of HI = 127.911 g/mol…

Q: A sample of 30.59 g Sr(HCO3)2 is heated and undergoes the decomposition reaction below. Calculate…

A:

Q: Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and…

A: The reaction taking place is given as, => CaF2 + H2SO4 --------> CaSO4 + HF Given : Mass of…

Q: The aluminum in a 0.805 g sample of an unknown material was precipitated as aluminum hydroxide…

A: Given,Mass of Aluminum = 0.805gMass of Al2O3 = 0.127 g Molar mass of Al2O3 is 101.96g/molMolar mass…

Q: One method used in the eighteenth century to generate hydrogen was to pass steam through red-hot…

A: Given 3Fe (s) + 4H2O (g) →Fe2O3 (s) + 4H2 (g) Molar masses:  Fe = 55.845 g/mol  H₂O = 18.01528 g/mol…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: The reaction of the combustion of morphine is: 4C17H19NO3+85O2→68CO2+38H2O+4NO2 Calculation of no.…

Q: Silver sulphide and hydrogen combine to form silver and hydrogen sulphide.  The equation for the…

A: In this question, we want to determine the percentage yield of the Silver ( Ag ).  You can see…

Q: One method used in the eighteenth century to generate hydrogen was to pass steam through red-hot…

A: Given that, a reaction is 3Fes+4H2Og→Fe3O4s+4H2g. The molar masses are Fe = 55.845 g/mol, H2O =…

Q: sample of 36.74g Sr(HCO3)2 is heated and undergoes the decomposition reaction below. Calculate the…

A: Applying concept of limiting reagent and mole concept.

Q: The aluminum in a 0.755 g sample of an unknown material was precipitated as aluminum hydroxide,…

A: In order to evaluate concentration of any particular element available in a certain substance, the…

Q: 2 NaN3(s) ------> 2 Na(s) + 3 N2(g) How many grams of nitrogen are produced when 10. grams of…

A: The given reaction is,                     2 NaN3(s) ------> 2 Na(s)  +  3 N2(g) Clearly, from…

Q: A sample of calcium metal of mass 2.0 g reacts with excess oxygen. Ca + O2 → CaO You get 2.06 g of…

A: Given Mass of Ca = 2 g actual yield of CaO = 2.06 g

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Given: When morphine undergoes combustion, carbon dioxide is produced. Mass of mixture            =…

Q: A 249.3-g sample of ground water is analyzed for calcium. The Ca2+ in the sample is first…

A: Given the mass of groundwater sample taken for analysis = 249.3 g  mass of Ca2P2O7 precipitate…

Q: If a sample of coke is 95% carbon by mass, determine the mass of coke needed to react completely…

A:

Q: Methanol, CH3OH, can be prepared from carbon monoxide and hydrogen according to the reaction CO (g)…

A: The reaction given is  CO (g) + 2 H2 (g) ------> CH3OH (l) Given : volume of CH3OH produced = 1.0…

Q: If 3.35 g of Cu(NO3)2 are obtained from allowing 2.25 g of Cu to react with excess HNO3, what is the…

A:

Q: For the chemical reaction below, determine the amount of HI produced when 3.29E+0 g of hydrogen is…

A:

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Mass % of morphine = Mass of morphine x 100/Mass of mixture

Q: Hydrogen fluoride is used in the manufacture of Freons (which destroy ozone in the stratosphere) and…

A: Percentage yield is the ratio of actual yield by theoretical yield.

Q: Part B A sample of N2 at STP with a volume of 55.1 mL contains 2.43x10-3 mol. What mass of Oscium,…

A:

Q: When a solid mixture of MgCO3 and CaCO3 is heated strongly, carbon dioxide gas is given off and a…

A: % of MgCO3 = (mass of MgCO3 / mass of sample )*100

Q: A 0.8761 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A:

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: Molar mass of morphine is 285.34 g/mol. When a mixture of NaCl and morphine undergoes combustion,…

Q: In the reaction between CO and Fe3O4 , the theoretical yield in an experiment is calculated to be…

A: Given : Theoretical yield = 47.2 g Fe Actual yield = 42.9 g Fe

Q: [References] A sample of calcium metal with a mass of 2.06 g was reacted with excess oxygen. The…

A:

Q: Hydrogen fuel can be generated using a process called coal gasification. Hydrogen gas is formed by…

A: Given that,    Hydrogen gas fuel is generated by the reaction of coal and oxygen in the presence of…

Q: Thermite reaction is necessary to produce molten iron. This reaction involves Fe3O4 and Al and is…

A: For the given reaction: 8Al      +   3Fe3O4 →   9Fe  +  4Al2O3 8 mol        3 mol         9 mol    4…

Q: The metal vanadium can be extracted from its oxide by heat- ing it in the presence of calcium:…

A:

Q: A 0.8571 g sample of iron ore is dissolved in acid, the iron is oxidized to the +3 state and then…

A: The mass of the iron ore sample is = 0.8571 g The mass of iron(III) oxide is = 0.1132 g The molar…

Q: Morphine (C₁₇H₁₉NO₃) is a painkiller in the opiate family. A sample of morphine was discovered that…

A: According to the mole concept, in terms of mass, the amount of substance in moles is equal to the…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".