Have you ever noticed that when organic compounds decompose emit odors? Well, the rotten smell of a decaying animal carcass is partially due to a nitrogen-containing compound called putrescine. Elemental analysis of this compound showed that it consisted of 54.50 % Carbon, 13.73% hydrogen and 31.77% nitrogen. If the molecular weight (molar mass) of putrescine is 88.16 g/mol, what will be the molecular formula of putrescine?

Q: A sample weighing 3.137 g is a mixture of Fe₂O3 (molar mass = 159.69 g/mol) and Al₂O3 (molar mass =…

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Q: A 125.6 mg sample of an organic compound containing only carbon, hydrogen, and nitrogen is combusted…

A: Answer The empirical formula is C3H8N The molecular formula is C6H16N2

Q: A particular protein sample is found to have 1 atom of iron in its chemical formula. If the mass…

A: Mass percent expresses the solute concentration in any mixture. The division of weight of dissolved…

Q: A flask contains 0.470 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: It is given that there is 0.470 mol of liquid bromine.

Q: A certain gasoline additive that boosts the octane rating of gasoline is made of the elements C, H,…

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Q: A flask contains 0.390 mol of liquid bromine, Br2. Determine the number of bromine molecules present…

A: Given, Number of moles = 0.390

Q: When 5.942 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 19.34 grams…

A: When organic compounds undergo combustion, they produce carbon dioxide and water. Chemical reactions…

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

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Q: Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: The reaction can be written as follows:The given mass of HBr = 69.6 gThe given mass NaOH = 45. g The…

Q: Suppose a piece of silver jewelry contains 7.78×1022 atomsatoms of silver (AgAg).

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Q: Mesitylene is a liquid hydrocarbon. Burning 0.582 g of the compound in oxygen gives 1.92 g of CO2…

A: We have to predict the empirical formula for mesitylene.

Q: The molar mass of M(OH)2 formed by the hypothetical metal M, is 144.096 g/mol what is the molar mass…

A: Molar mass of a compound is equal to the sum of the molar masses of all the elements. The molar mass…

Q: A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The…

A: Given:Mass of CO2 = 167 mg.Mass of H2O = 34.2 mg.Molar mass of CO2 = 44 g/mol.Molar mass of H2O = 18…

Q: A combustion analysis of a 0.4647-g sample of a compound known to contain only carbon, hydrogen, and…

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Q: Menthol is a flavoring agent extracted from peppermint oil. It contains C, H, and O. In one…

A: no of moles=mass/molar mass General Empirical formula  Cx H 2x Oy

Q: The following reaction describes the production of elemental sulfur. Calculate the mass of elemental…

A: Given- Weight of dihydrogen sulphide =15.39 g  H2S(g)+O2(g) -> S8(s) + H2O(g)

Q: un o 8u described in this laboratory. After heating, the sample is found to weigh 2.245 grams. How…

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Q: If 1.800 g of aluminum reacted with an excess aqueous HCl to produce 8.894 g of aluminum chloride.…

A: Answer:- firstly a balanced chemical equation is written then using the mass , mass of Al and cl is…

Q: When 3.232 grams of a hydrocarbon, C,Hy, were burned in a combustion analysis apparatus, 11.10 grams…

A: Data given: Mass of sample = 3.232 g Mass of CO2 = 11.10 g Mass of H2O = 1.818 g Molar mass of the…

Q: The empirical formula of a compound is X5Y7Q by mass and the molecular formula weighs 162.1 g/mol.

A: Let us the consider the actual molecular formula as (X5Y7Q)n. Then,n x ( 12.01*5 + 16*7 + 14.01) =…

Q: Compound X has a molar mass of 86.08 g-mol¯ and the following composition: element mass % carbon…

A: 1- First Calculate the moles of C, H and O :  a) moles of C = ( 55.80g / 12gmol-1 ) = 4.65 mol  b)…

Q: When 4.673 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 16.05 grams…

A: Given: Mass of compound burned = 4.673 g. Mass of CO2 produced = 16.05 g. Mass of H2O produced =…

Q: A binary compound of the elements X and Y is 1/3X by mass.  The molar mass of element X is ¾ the…

A: Empirical Formula  It is the simplest possible ratio of atoms present in a compound. To get the…

Q: Consider the combustion of methane.   CH4(g)+2O2(g)→CO2(g)+2H2O(g)  Suppose 2.5 mol  of methane are…

A: Given:Moles of CH4 = 2.5 mol.Moles of O2 = 3.5 mol.

Q: -If you take an aspirin tablet (a compound consisting solely of carbon, hydrogen, and oxygen) with a…

A: Given data contains, The mass of aspirin is 1.00g. The mass of carbon dioxide is 2.20g. The mass of…

Q: A candle flame produces easily seen specks of soot near the edges of the flame, especially when the…

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

Q: hat are the percentages of carbon, hydrogen, and nitrogen in the compound? What is the empirical…

A: Solution: So this question is from the stoichiometry. We  have general knowledge of formulae for…

Q: What is the molecular formula of the molecule that has an empirical formula of CH and a molar mass…

A: Given , Empirical formula = CH Molar mass = 78.0 g/mol

Q: 1. The organic solvent thiophene is a carbon-hydrogen-sulfur compound that yields CO2, H2O, and SO2…

A: Given: Mass of compound burned = 1.3020 g. Mass of CO2 produced = 2.7224 g. Mass of H2O produced =…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

A: Given: Mass of sample = 1.000 g Mass of CO2 formed = 2.579 g Mass of H₂O formed = 0.6536 g Molar…

Q: (Mass of crucible is 24.98g. The mass of the cover is 11.36g. The mass of the crucible, cover, and…

A: The mass % is equal to the ratio of the mass of the substance to the total mass multiplied by 100.…

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

Q: A chemist weighs 50.0 grams of solid Mg(OH)2. How many moles of Mg(OH)2 are in the sample? How…

A: Given :-  Amount of Mg(OH)2 = 50.0 g  To Calculate :-  No.of moles of Mg(OH)2  No.of formula units…

Q: A 1.000 g sample of an unknown compound containing only carbon, hydrogen, and oxygen was analyzed…

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Q: Ethanol, CH3CH2OH, is the principal type of alcohol found in alcoholic beverages, produced by the…

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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: The semi-precious stone turquoise is a hydrate and with the chemical formula CuAl6(PO4)+(OH):"4 H2O.…

A: Interpretation : Following questions need to be solved .

Q: Complete combustion of 7.30 g of a hydrocarbon produced 22.4 g of CO2 and 10.7 g of H2O.   What is…

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Q: When 4.464 grams of a hydrocarbon, CxHy, were burned in a combustion analysis apparatus, 14.01 grams…

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Q: A newly discovered metalloprotein, which contains four atoms of Mo per molecule of protein, is found…

A: The given values in the question are:Number of Molybdenum (Mo) atoms per molecule of protein = 4Mass…

Q: An organic compound X was found to contain only C, H, and Cl. The following experiments were…

A: In order to determine the empirical formula for the compound X, we need to first find the mass of…

Q: Complete combustion of 4.50 g of a hydrocarbon produced 14.4 g of CO2 and 5.15 g of H2O. What is the…

A: Mass of hydrocarbon = 4.50gm  Mass of CO2= 14.4 gm  Mass of H2O = 5.15 gm  Find empirical formula of…

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".