Codeine, a narcotic drug used to treat cough, has an empirical formula of C18H21NO3. What is the molecular formula of codeine if its molar mass is 299g/mol? (C=12.01, H=1.008, N=14.00, O=16.00)

Q: The empirical formula of a compound is C2H5O. Its molecular mass is 135.112. What is its molecular…

A: Molecular mass = n × Empirical formula mass

Q: Naphthalene is a compound containing carbon and hydrogen that is used in mothballs. Its empirical…

A: The given data : The empirical formula of Naphthalene = C5H4 The molar mass of naphthalene = 128.16…

Q: Caffeine, a stimulant of the central nervous system, has the molecular formula C8H₁0N4O2. The molar…

A: Mass of 1 mole = molar mass 1 mole AB contain 1 mole A and 1 mole B

Q: 4) Nicotine, the stimulant in tobacco, causes a very complex set of physiological effects in the…

A: From the amount of CO2, H2O and N2 formed, we find out the amount of C, N and H present in the given…

Q: Suppose you isolate an acid from clover leaves and know that it contains only the elements C, H, and…

A:

Q: A 1.42 g sample of KCr(SO) XH20 was heated in a crucible to get a constant mass. The mass of the…

A: Formula to calculate mole is :-  Mole = mass÷ molar mass

Q: he empirical formula for trichloroisocyanuric acid, the active ingredient in many household…

A:

Q: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Given the molar mass of the compound is 893.49…

A: The chemical formula for chlorophyll is C₅₅H₇₂MgN₄O₅. Molar mass of chlorophyll is 893.49 g/mol1 mol…

Q: The fuel used in many disposable lighters is liquid butane, C4H10C4H10. Butane has a molecular…

A: The molar mass of butane is 58.1 g/mol. 1 mole of butane contains 6.023 × 1023 atoms and 1 mole of…

Q: Hydrates take the form: compound·nH2O. An unknown hydrate has a molar mass of 446 g/mol.  If the…

A:

Q: Label attached pair of alkenes as constitutional isomers, stereoisomers, oridentical.

A: The isomers having identical molecular formula and different bonding arrangement are the…

Q: The fuel used in many disposable lighters is liquid butane, C4H10C4H10. Butane has a molecular…

A: In one mole of butane C4H10 total 4 mole of carbonatoms are present .→ No of atoms in 4 mole of…

Q: A sample of CO2 has a mass of 50.0 grams. What is the number of molecules of carbon dioxide in the…

A: We know,Number of mole = mass of sample (g)molar mass (gmol-1)and1 mol = 6.022x1023 molecule

Q: 5A. Sorbitol, used as a sweetener in some sugar-free foods, has a molecular mass of 182 u and a mass…

A:

Q: Sugars can be metabolized to lactic acid by Streptococcus mutans, a bacterium that lives in the oral…

A: Given : Mass percent of C = 40.0 % Mass percent of H = 6.71 % Mass percent of O = 53.3 % And molar…

Q: 2. Iron reacts with chlorine gas to form iron(II) chloride: 2 Fe(s) + 3 Cl₂(g) →→2 FeCl,(s) What…

A: Two mole of iron react with three mole of Cl2 and produced two mole of FeCl3

Q: Cobalt(II) chloride forms several hydrates with the general formula CoCl2·xH2O, where x is an…

A:

Q: Ascorbic acid, or vitamin C (C6H8O6), is an essential vitamin. It cannot be stored by the body and…

A:

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: The mass of the sample of the compound manganese(IV) perchlorate is = 214.6 g The molar mass of…

Q: Iron is biologically important in the transport of oxygen by red blood cells from the lungs to the…

A: Given :-  Mass of Iron present in 2.64 × 1013 red blood cells = 2.90 g  To be calculated :-  Number…

Q: Fermentation is a complex chemical process of wine making in which glucose is converted into ethanol…

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Q: The molar mass of one empirical unit of the antidepressant rolicyprine (C7H&NO) is 122.1 g/empirical…

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Q: A 3.06 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

A: Empirical formula: Formula containing atoms in smallest possible integer ratio Molecular formula:…

Q: Ascorbic acid, or vitamin C (C6H8O6), is an essential vitamin. It cannot be stored by the body and…

A: Given : Mass of vitamin C i.e C6H8O6 in tablet = 500.0 mg = 0.500 g…

Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: Cyanocobalamin is vitamin B12 with molar mass of 1355.38 g/mol

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A:

Q: Hemoglobin, a protein in red blood cells, carries O₂ from thelungs to the body’s cells. Iron (as…

A: It is given haemoglobin that haemoglobin has a molar mass of 6.8×104g/mol and the mass percentage of…

Q: How many chloride atoms are in 32.3 g of CaCl2?

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

Q: Straight-chain, saturated carboxylic acids, a class of hydrocarbons, has the general formula…

A: Given that :-  saturated carboxylic acids has the general formula CnH2n+1COOH  Atomic weights:- 1) C…

Q: Quinine is used to treat malaria and has a molar mass of 325g/mol. If the empirical formula is…

A:

Q: Hydroxyapatite, Ca5(PO4)3(OH), is a naturally occurring mineral in the bone. Calculate the mass (g)…

A: Here we are required to find the mole of hydroxyapatite in average adult.

Q: (d)Using the formula Mn(ClO₄)₄ (MM = 452.74), what is the percent by mass of Cl in the compound?…

A: Number of moles = mass / molar mass  % by mass =( mass of Cl atoms in Mn(ClO4)4 / mass of 1 mol of…

Q: Compound Z is a chemical naturally found in peppermint and other mint plants and has mild anesthetic…

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Q: Aniline, a starting material for urethane plastic foams, consists of C, H, and N. Combustion of such…

A: Empirical formula of a compound is expressed with the ratio of minimum number of atoms of each…

Q: The empirical formula of quinine is C10H12NO. If its molar mass is 324.42 g/mol, what is its…

A: Empirical formula= C10H12NOEmpirical mass=(12.01×10+1.008×12+14.00+16.00)g…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.