a. A piece of iron metal with a mass of 42.5g is burned in the presence of oxygen. The resulting iron oxide has a mass of 60.8g. What is the empirical formula of the iron oxide? b. A sample contains 60.0 % C, 13.3 % H and 26.7% O by mass. What is the empirical formula for the compound? c. If the molar mass of the compound was determined to be 233g/mole, what is the molecular formula of the compound?

Q: What mass of AgI (234.8 g/mol) can be produced from a 0.8093 g sample that is 47.6% MgI2 (278.11…

A: 0.8093 g of sample has 47.6 % MgI2 . Here, we have to calculate the mass of AgI that can be produced…

Q: The balanced equation for the Haber Process is shown below. In this reaction, nitrogen and hydrogen…

A: Applying concept of moles to calculation.

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A:

Q: How many moles of Al are necessary to form 38.6 g of AIBR3 from this reaction: 2 Al(s) + 3 Br2(1) →…

A: Answer: 0.1447 Moles of Aluminium (Al) necessary to form 38.6 gram of AlBr3.

Q: Which is the correctly balanced form of the given equation? S(s) + O3(g) SO2(g)a) S(s) + O3(g)…

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A: Mass of the Carbon can be calculated as

Q: How many moles of Al are necessary to form 76.8 g of AIBR3 from this reaction: 2 Al(s) + 3 Br2(1) →…

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Q: A 0.660 g sample of a pure hydrocarbon was completely burned. The products were 1.28 g CO2 and 0.421…

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A: Given , mass of sample = 5.423 g mass of CO2=5.903 g mass of H2O = 3.020 g

Q: What is the maximum mass of B4C that can be formed from 2.00 moles of boron(III) oxide?

A: Boron(III) oxide is B2O3 B4C can be prepared by the reaction B2O3 with carbon. The chemical reaction…

Q: 1 Bao + 1 H50, → 1 Bas0, + 1 H,0 3. (a) What mass of BaSO, can be formed from 196.0 g of H,SO,?

A: Use the stoichiometric calculations as shown below:

Q: How many moles of Al are necessary to form 83.2 g of AIBr3 from this reaction: 2 Al(s) + 3 Br2(1) →…

A:

Q: Which is not balanced? O C3H8 + 502 → 3CO2 + 4H2O O P4 + 6CI2 → 4PCI3 O 2AI + 302 2AI2O3 O K 2CO3 +…

A: 1) C3H8 + 5O2 → 3CO2 + 4H2O This equation is balanced as both sides C, H, O are balanced.

Q: You weigh a sample of 2.0moles of a substance to be 7.1 kg. Why is an answer of 3.55kg/mol…

A:

Q: Mass of watch glass and evaporating dish:67.511 g   Mass of watch glass, evaporating dish, and Mg…

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Q: Part 2: The Concept of Limiting Reactant 2. Water is formed by burning H2 (g) in the presence of O2…

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A: Empirical formula: The simplest positive integer ratio of atoms present in a compound is known as…

Q: Nitric oxide is made from the oxidation of ammonia. What mass of nitric oxide can be made from the…

A: Number of moles of reactants is calculated

Q: The reaction of 890. g each of NH3 and O2 was found to produce 668 g of NO. 4 NH3(g) + 5 O₂(g) → 4…

A:

Q: 39. Calculate the number of molecules present in each of the following samples. a. 4.75 mmol of…

A: To solve this problem we have to calculate the number of molecules of the given sample .

Q: An organic compound consists of carbon, hydrogen and nitrogen only. Complete combustion of a 150. mg…

A:

Q: 1. H₂S (g) + CH4 (g) 2. NO₂ (g) 3. Pb3O4 (s) 4. C(s) + CO₂(g) 5. NO (g) Chemical Reaction Fe3O4 (s)…

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Q: Silicon tetrachloride (SiCl4 ) can be prepared by heating Si in chlorine gas:  Si(s) + 2Cl2(g) ->…

A: Molar mass of Cl2 = 70.9 g/mol

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A: Given that additive contains only C, H and Pb.

Q: Prior to their phaseout in the 1980s, chemicals containing lead were commonly added to gasoline as…

A: The question is based on the principle of elemental analysis. by analysing the given amounts , we…

Q: Consider the following balanced reaction. What mass (in g) of CO2 (44.01g/mol) can be formed from…

A:

Q: N2(g) + 3 H,(g)→2 NH;(g) How many moles of NH, can be formed from 3.0 mol of N, and 6.0 mol of H,?

A: Given reaction is : N2 (g) + 3H2 (g) ---------> 2NH3 (g)  Moles of N2 = 3.0 mole  Moles of H2 =…

Q: Phosphorus can be prepared from calcium phosphate by the following reaction: 2Ca₃(PO₄)₂₍s₎ +…

A:

Q: 1. From the given reaction: Ca(No3)2 + Na3PO4 → Ca3(PO4)2 + NaNO3 a. How many grams of sodium…

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Q: Coke is an impure form of carbon that is often used in the industrial production of metals from…

A: Given: percentage of carbon by mass = 95% Mass of copper(II) oxide = 1.0 ton To find: The mass of…

Q: Consider the reaction: 2CH4(g) + O2(g) – 2C0(g) + 4H2(g) Assuming complete reaction, how many moles…

A: The balanced equation is  2CH4   +   O2   -------- >   2 CO   +   4 H2  from the reaction 1 mole…

Q: 1: The empirical formula of hydrocarbon that contains 18.4% H and 81.6% C by mass is? B) CH3 2: What…

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Q: (Mass of crucible and cover is 43.92 g. The mass of crucible, cover, and magnesium is 44.62g. Mass…

A:

Q: Mass of watch glass and evaporating dish (g) = 59.92 Mass of watch glass, evaporating dish, and Mg…

A:

Q: How many moles of MgCl2 are present in 78.3g of MgCl₂? O 0.822 moles O 7450 moles O 1.31 moles O4680…

A:

Q: Consider the following balanced reaction. What mass (in g) of CO 2 can be formed from 288 mg of O 2?…

A:

Q: The balanced equation for the Haber Process is shown below. In this reaction, nitrogen and hydrogen…

A:

Q: Calcium carbide (CaC2) reacts with water to produce acetylene (C2H2): CaC2 (s) + 2 H2O (g) → Ca(OH)2…

A: CaC2s + 2H2Og → CaOH2s + C2H2gGiven mass of C2H2 = 6.5gMolar mass of C2H2 = 26.00 g/molNumber of…

Q: Mass Aluminum Foil (g) 2.5415 Mass Filter Paper (g) 0.2777 Mass Filter Paper + Product (g) 35.6484…

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A: (a)

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A:

Q: Consider the following chemical reaction:  CaCO3(s) + 2HNO3(aq) ----------> Ca(NO3)2(aq) + CO2(g) +…

A: Given :-  CaCO3(s) + 2HNO3(aq) → Ca(NO3)2(aq) + CO2(g) + H2O(l)  Mass of HNO3 reacts = 1.18 g  MM of…

Q: Elemental iron is produced according to the following reaction: Fe2O3(s)  + Al(s) ---> Al2O3(s) +…

A: The balanced equation for reaction of iron(III) oxide and solid aluminium is as follows, Fe2O3  S+2…

Q: In one process, 6.00 kg of CaF2 are reacted with an excess H2SO4 and yield 2.85 kg of HF. Calculate…

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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".