A student heats a 2.8695g sample of a mixture that contains an unknown amount of potassium chlorate (KClO3). The KClO3in the mixture decomposes and releases its oxygen. The mass of the remaining sample residue was 2.0427g. KClO3(s) →KCl (s) + 3 O (g) a.How many grams of oxygen were in the KClO3sample? b.How many moles of oxygen atoms is this? c.How many moles of KClO3were in the original sample? d.How many grams of KClO3were in the original sample? e.What is the % of KClO3in the original sample?

Q: 23. Consider the reaction: 3 AgC2H;O2(aq) + Na3PO4(aq) → Ag:PO46) + 3 NaC2H3O2(aq) 4.000 g of silver…

A: "Since there are multiple subparts, we will answer only the first three subparts. If you require…

Q: The drawing below shows a mixture of molecules: key O carbon hydrogen O nitrogen sulfur chlorine…

A: There are 10moles of Carbon and 4 moles of oxygen initially present. a) Of which moles are there the…

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Q: How many moles of Al are necessary to form 70.0 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Mass of AlBr3 = 70.0 g  Molar mass of AlBr3 = 266.69 g/mol Moles of Al to form 70.0 g of AlBr3 = ?…

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A: Given: synthesis of one mole of nitrogen trioxide  To find : Balanced Reaction Solution: Balanced…

Q: For the reaction below, if you produce 3.00 g BCl3(l) from 3.00 g B2O3, 3.00 g C and 3.00 g Cl2…

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Q: 3) Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of…

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Q: *** What amount (in mol) and what mass (in kg) of carbon dioxide are produced when 20 gallons…

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Q: If you dissolve lead(II) nitrate and potassium iodide in water they will react to form lead(II)…

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Q: Consider the following reaction. How many moles of oxygen are required to produce 10.0 moles of…

A: Given,No of moles of water = 10 moleC3H7SH(l) +6O2(g) →3 CO2(g) +SO2(g) +4H2O (g)How many mole O2…

Q: Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with…

A: The given reaction is,                       4HCl(aq)+MnO2(s)⟶MnCl2(aq)+2H2O(l)+Cl2(g) Clearly, from…

Q: chlorate

A: 2KClO3(s) -------> 2KCl(s) + 3O2(g)  Molar mass of KClO3 and O2 are 122.55gmol-1 and 32gmol-1…

Q: Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with…

A: Given: Mass of MnO2 = 41.3g Mass of HCl = 44.3g Molar Mass of MnO2 = 86.84 g/mol Molar Mass of HCl =…

Q: What mass of potassium nitrate is needed to generate 163.0  L of gas, composed of 111.0  L of N2 and…

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Q: How many moles of Al are necessary to form 67.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A: Molar mass of Al=26.98 g/mol Molar mass of Br2 =159.808  g/mol The molar mass of AlBr3 =266.69 g/mol…

Q: How many moles of Al are necessary to form 86.0 g of AIBrs from this reaction: 2 Al(s) + 3 Br2(1) 2…

A: Since you have posted multiple questions, we are entitled to answer the first only.

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A: Given 1.2 mol of Nitrogen and Hydrogen gas  30% of ammonia is reacted  We have to find moles of…

Q: What is always conserved in a chemical reaction? A) moles B) volume C) atoms D) molecules E)…

A: Chemical reaction is process in which one substance(reactant)is/are changed to another…

Q: A 19.51 ݃ sample of impure methylamine, which contains 72.58% (by mass) of CH3NH2 , is reacted with…

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Q: The reaction between aluminum and iron(III) oxide can generate temperatures approaching 3000°C and…

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Q: Pure copper may be produced by the reaction of copper(I) sulfide with oxygen gas as follows:…

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Q: X

A: Here we are calculating mole by using stoichiometry

Q: Consider the combustion of octane (CgH18), given the following unbalanced equation: O 45.4 g O 227 g…

A: Please note- As per our company guidelines we are supposed to answer only one question. Kindly…

Q: 12.Consider this reaction, which occurs in the atmosphere and contributes to photochemical smog:…

A: 1-First we will convert grams of P2O5 to moles :  Molar mass of P2O5 = 142gmol-1  Moles of P2O5 = (…

Q: 23. Consider the reaction: 3 AgC2H3O2(aq) + Na3PO4(ag) → Ag;PO4(s) + 3 NaC2H;O2(aq) 4.000 g of…

A: "Since there are multiple subparts, we will answer only the first three subparts. If you require the…

Q: 11. In the equation:  C6H15N4O6 + N2O  C5H11N4O6 + CH4N2O   A. Which compounds are the reactants?…

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Q: Consider the reaction: ANH3(g) + 502(g)-2NO(g) + 6H;O(g) When 0.248 mol of NH3(g) is reacted with…

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Q: If sodium peroxide is added to water, elemental oxygen gas is generated, consider this unbalanced…

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Q: 5. Consider the balanced chemical equation 4Al(s)+30,(g)→2A1,O,(s) a. What mole ratio would you use…

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A: We have to find moles of hydrazine would be produced

Q: calculate the mass (g) of H2SO3 produced by the reaction.

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Q: How many moles of Al are necessary to form 48.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A:

Q: Chlorine gas can be prepared in the laboratory by the reaction of hydrochloric acid with…

A: Given percentage yield is 80.7

Q: What is always conserved in a chemical reaction? A) moles B) volume C) atoms D) molecules E)…

A:

Q: Lithium and nitrogen react in a combination reaction to produce lithium nitride:  6Li (s) + N 2 (g)…

A: Given :  6Li (s) + N 2 (g) → 2Li 3N (s)

Q: 2 C2H6 +7 O2→4 CO2 + 6 H2O how many moles of CO2 are formed when 1 mole of O2 is consumed?

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Q: A. what is the maximum mass of water that may be produced?  B. what is the excess reactant?

A: Step : 2          What is the maximum mass of water that may be produced and the excess reactant in…

Q: How many moles of Al are necessary to form 25.8 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

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Q: Consider the following balanced reaction. What mass (in g) of CO2 can be formed from 288 mg of O2?…

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Q: Consider the following reaction. How many moles of oxygen are required to produce 2.33 moles of…

A: Given :-  C3H7SH(l) + 6O2(g) ---->3CO2(g) +SO2(g) + 4H2O(g)  Number of moles of H2O = 2.33 mol…

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Q: How many moles of Al are necessary to form 48.0 g of AlBr₃ from this reaction: 2 Al(s) + 3 Br₂(l) →…

A:

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".