Pure antimony (Sb) can be prepared by heating the antimony ore (Sb2S3) in the presence of iron as follows: Sb2S3 + 3Fe ==> 2Sb + 3FeS If 438.6 g of antimony sulfide is reacted with iron and 37.6 g of pure antimony is produced, what is the % yield for this reaction?

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

A: Given, Mass of Cu = 2.25 g   Moles of Cu can be calculated as:

Q: Ozone, O3 is formed in vehicle exhaust by the reaction NO2(g) + O2(g) —-> NO(g) + O3(g). What is the…

A: Given:mass of NO2 =2.0gAlso we know,Molar mass of NO2 = 46gMolar mass of O3= 48g

Q: When HgO is heated, it decomposes into elemental mercury and molecular oxygen. If 10.0 g of Hg is…

A:

Q: 23) A chemist carries out this reaction in the laboratory, using 4.31 grams of zinc and an excess of…

A: Mass of Zn = 4.31 g Theoretical yield = 6.41 g Actual yield = 5.01 g

Q: small quantities of oxygen can be prepared in the laboratory by heating potassium chlorate, KCIO3…

A: The objective of this question is to calculate the amount of oxygen that can be produced from a…

Q: Suppose you burn 0.4500 g Mg in air and obtained 0.6945 g of magnesium oxide, what is your percent…

A: Number of moles of magnesium oxide obtained from two moles of magnesium = 2 mol Number of moles of…

Q: In an experiment, 5.25 g of H2 was added to react with 12.5 g of O2. This produced 13.5 g of H2O.…

A: Given that, Mass of H2 = 5.25 g,  Molar mass = 2 g mol-1 Mass of O2 = 12.5 g, Molar mass = 32 g…

Q: Calculate the percent yield for the following reaction if 76.8 g of H2O reacted and 125 g of NO were…

A: The mole to mole ratio for H2O and NO in the given reaction is 1:1. Therefore, 18 g of water will…

Q: If 1.0 mol of Mg is mixed with 2.0 mol of Br2, and 0.19 mol of MgBr2 is obtained, what is the…

A:

Q: 15.50 g of NH4Cl reacts with an excess of AgNO3.  In the reaction 35.50 g AgCl is produced. What is…

A: The balanced reaction taking place is given as, => NH4Cl + AgNO3 ------> AgCl + NH4NO3  Given…

Q: Iron reacts rapidly with chlorine gas to form a reddish brown, ionic compound (A), which contains…

A: The chemical equation for the reaction between Fe and Cl2 is shown below. 2Fe+3Cl2→2FeCl3 The number…

Q: How many Cu grams are produced if 123 mole of CuCl2 is reacted with excess K?

A: Given: Moles of CuCl2 reacting = 123 mol.

Q: When HgO is heated, it decomposes into elemental mercury and moecular oxygen.  If 60.0g og Hg is…

A: % Yield = 100 x Obtained mass/calculated mass

Q: Combining 0.397 mol Fe2O30.397 mol Fe2O3 with excess carbon produced 10.9 g Fe.10.9 g Fe. what is…

A: The reaction which takes place when Fe2O3 and excess carbon reacts is as,

Q: When HgO is heated, it decomposes into elemental mercury and diatomic oxygen gas. If 57.0 g of Hg is…

A: Given: Mass of HgO = 81.5 g Mass of Hg (actual yield) = 57.0 g/mol Molar mass of HgO = 216.59 g/mol…

Q: Iron metal reacts with chlorine gas giving iron (III) chloride. The balanced chemical equation for…

A: Percentage yield can be calculated by dividing actual yield by theoretical yield and multiplying by…

Q: A sample of 96.7g of Carbon Dioxide was obtained by heating 299.5g of calcium carbonate what is the…

A: The given balanced equation is, The above reaction is decomposition type reaction and the number of…

Q: A container holds 75.0 g of CuO and 5.00 g of H₂. The following reaction occurs: CuO + H₂ --> Cu +…

A:

Q: When 25.0 grams of AgNO3 are reacted with excess Na3PO4, 17.7 grams of Ag3PO4 are produced. What…

A: Answer:When two solutions of different substances are mixed and formation of a precipitate takes…

Q: A student obtained 11.4 g of PbSO4 from the following reaction. The student added 15 g of Lead (II)…

A:

Q: Calculate the percent yield for water.

A: Number of moles = mass/molar mass  Molar mass of WO3 is 231.838 g/mol  Percent yield = (actual…

Q: When 12.4 g of CH4 is reacted with excess O2, a mass of 20.8 g of CH4O is recovered. What is the %…

A: The number of moles of a compound can be determined as: Number of moles=Given massMolar…

Q: Chromiun metal can be produced by the reduction of Cr2O3 with elemental silicon.  2 Cr2O3 + 3 Si…

A: Given: Mass of Cr2O3 = 350.0 g Mass of Si = 235.0 g Mass of Cr = 213.2 g

Q: If 4.90 mol of C5H₁2 reacts with excess O₂, how many moles of CO₂ will be produced by the following…

A: O2 is in excess so C5H12 will be the limiting reagent.The product will formed according to C5H12.

Q: See the reaction below. If 1.609 kg of N2O5 is formed when 1.568 kg of

A:

Q: Methanol is used in racing cars because it is a clean fuel. It can be synthesized according to the…

A: Given mass of hydrogen = 5 × 103 g Actual yield of methanol = 3.5 × 104 g

Q: Calculate the maximum amount in grams of H₂O that can be produced by the reaction of 550 mg of H₂…

A: Given, H2(g) + O2(g) ➝ H2O(g) Balancing the above equation: 2H2(g) + O2(g) ➝ 2H2O(g) Note: 1000 mg =…

Q: Calculate the percent yield for the reaction if 76.8 g of H2O reacted completely with nitrogen…

A:

Q: Balance the combustion reaction in order to answer the question. Use the lowest whole‑number…

A: The balanced chemical reaction is given below.

Q: What is the actual amount of magnesium oxide produced when excess carbon dioxide reacts with 44.8 G…

A: The chemical reaction is- 2Mg(s)+CO2(g)→2MgO(s)+C(s) The mass of Magnesium metal = 44.8 g The molar…

Q: Be + 2 HCl ➞ BeCl2 + H2   Calculate the percent yield if 25.0 g of beryllium reacts with excess…

A:

Q: Although xenon is a "noble gas," it reacts with fluorine and oxygen. When xenon gas reacts with F2…

A: Percentile yield is defined as the ratio of actual yield by theoretical yield multiplied by 100.…

Q: Ammonia gas can be prepared by the reaction CaO(s)+2 NH₂Cl(s)→ 2 NH3(g) + H₂O(g) +CaCl₂ (s) If 111 g…

A: we have to calculate the moles of excess reactant and the moles of products

Q: How many Grams of Cu2S can be produced from 1.2g Cu if the percentage yield of the reaction is ONLY…

A: Given: Mass of Cu = 1.2 g. And percent yield of the reaction = 85 %.

Q: A reaction between 1.00 g of TiCl4 and 0.400 g of Mg produces 0.197 g of Ti. What is the percent…

A: Recall the given reaction,                                           The mass of the The mass of the…

Q: What is the theoretical yield in grams of iron (III) oxide (MM=159.7 g/mol) if 215.4 g of Fe are…

A:

Q: If a given reaction had 5.3 moles of CO to react with an excess of H2 to produce methanol (MM= 32.04…

A: The reaction between the carbon monoxide and hydrogen is shown in chemical equation (1)

Q: CALCIUM CARBONATE IS DECOMPOSED BY HEATING. THE BALANCED EQUATION FOR THIS REACTION IS CaCO3 ---›…

A: We know that, Percent yield = Actual yieldTheoretical yield×100% Actual yield is the amount of…

Q: In this reaction: Mg (s) + I 2 (s)-> Mgl₂ (s), if 10.0 g of Mg reacts with 60.0 g of 12, and 53.98 g…

A: Answer:The reactant that exhausted first in the chemical reaction and decides the yield of product…

Q: Calculate the mass (in grams) of Fe3O4 expected to be produced from the reaction of 2.11 g of Fe…

A:

Q: Nitrobenzene, CH,NO,, is an important raw material for the preparation of dyes. It is prepared from…

A:

Q: What is the Mass of CuO after heating and Percentage CuO formed by the unknown compound after…

A:

Q: In certain reaction Fe and O2 combine to form irom(III) oxide. 18.1 moles of Fe and 12.4 mole of O2…

A: Given, moles of Fe = 18.1 moles Moles of O2 = 12.4 moles First we find the limiting and the excess…

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".