16:49Introduction to Combustion Analysis, Empirical Formula & Molecular Formula ProblemsThe Organic Chemistry Tutor573views
02:52Finding and Calculating an Empirical Formula of a Compound | How to Pass ChemistryMelissa Maribel353views2rank
11:00Empirical Formula & Molecular Formula Determination From Percent CompositionThe Organic Chemistry Tutor458views
Multiple ChoiceWhich of the following could be both a molecular formula and an empirical formula?359views
Multiple ChoiceIn order to make 1 s’ more, you need 2 graham crackers, 1 piece of chocolate, and 1 marshmallow. How many s’mores can be made from the following ingredients? 7 graham crackers, 6 pieces of chocolate, and 5 marshmallows182views
Multiple ChoiceA chemist wishing to identify a compound determines the masses of its elements as: 1.445 g S and 6.391 g Cl. Determine its empirical formula.42viewsHas a video solution.
Multiple ChoiceDetermine the simplest form of a compound made up of carbon, hydrogen, nitrogen and oxygen if it is made of 49.48% C, 5.19% H and 16.48% O.46viewsHas a video solution.
Multiple ChoiceA compound composed of potassium, manganese and oxygen contains 3.12 g potassium and 1.922 x 1023 oxygen atoms. If a sample of the compound weighs 12.61 g determine its empirical formula?43views2rankHas a video solution.
Textbook QuestionThe following diagram represents the collection of elements formed by a decomposition reaction. (b) Could you draw a diagram representing the molecules of the compound that had been decomposed? Why or why not? 637viewsHas a video solution.
Textbook QuestionThe following diagram represents the collection of elements formed by a decomposition reaction. (a) If the blue spheres represent N atoms and the red ones represent O atoms, what was the empirical formula of the original compound? 398viewsHas a video solution.
Textbook QuestionThe following diagram represents the collection of CO2 and H2O molecules formed by complete combustion of a hydrocarbon. What is the empirical formula of the hydrocarbon?422views1rankHas a video solution.
Textbook QuestionDimethylhydrazine, a colorless liquid used as a rocket fuel, is 40.0% C, 13.3% H, and 46.7% N. What is the empirical formula? (LO 3.11) (a) CH4N9 (b) CH2N (c) C2H4N (d) C2H5N2757viewsHas a video solution.
Textbook QuestionGive the empirical formula of each of the following compounds if a sample contains (c) 26.56% K, 35.41% Cr, and 38.03% O by mass.1187viewsHas a video solution.
Textbook QuestionGive the empirical formula of each of the following compounds if a sample contains (b) 2.10 g nickel and 0.58 g oxygen308viewsHas a video solution.
Textbook QuestionGive the empirical formula of each of the following compounds if a sample contains (a) 0.052 mol C, 0.103 mol H, and 0.017 mol O524viewsHas a video solution.
Textbook QuestionThe structural formulas of the compounds n-butane and isobutane are shown below. (c) Which formulas—empirical, molecular, or structural—allow you determine these are different compounds? 344viewsHas a video solution.
Textbook QuestionThe structural formulas of the compounds n-butane and isobutane are shown below. (b) Determine the empirical formula of each. 497viewsHas a video solution.
Textbook QuestionDetermine the empirical formula of each of the following compounds if a sample contains (c) 89.14% Au and 10.86% O by mass.735views1rankHas a video solution.
Textbook QuestionDetermine the empirical formula of each of the following compounds if a sample contains (b) 12.0 g calcium and 2.8 g nitrogen547viewsHas a video solution.
Textbook QuestionDetermine the empirical formula of each of the following compounds if a sample contains (a) 3.92 mol C, 5.99 mol H, and 2.94 mol O430viewsHas a video solution.
Textbook QuestionDetermine the empirical formulas of the compounds with the following compositions by mass: (b) 57.5% Na, 40.0% O, and 2.5% H510viewsHas a video solution.
Textbook QuestionDetermine the empirical formulas of the compounds with the following compositions by mass: (a) 74.0% C, 8.7% H, and 17.3% N317viewsHas a video solution.
Textbook QuestionWhat are the molecular and empirical formulas for each of the following compounds? Write the molecular formula for the following compound. 321viewsHas a video solution.
Textbook QuestionDetermine the empirical formulas of the compounds with the following compositions by mass: (c) 60.0% C, 4.4% H, and the remainder O349viewsHas a video solution.
Textbook QuestionDetermine the empirical formulas of the compounds with the following compositions by mass: (a) 42.1% Na, 18.9% P, and 39.0% O915viewsHas a video solution.
Textbook QuestionTwo substances have the same molecular and empirical formulas. Does this mean that they must be the same compound?612viewsHas a video solution.
Textbook QuestionWrite the empirical formula corresponding to each of the following molecular formulas: (e) C6H4Cl2454viewsHas a video solution.
Textbook QuestionWrite the empirical formula corresponding to each of the following molecular formulas: (c) C4H8O2500viewsHas a video solution.
Textbook QuestionWrite the empirical formula corresponding to each of the following molecular formulas: (b) C8H10739viewsHas a video solution.
Textbook QuestionWrite the empirical formula corresponding to each of the following molecular formulas: (a) Al2Br6508viewsHas a video solution.
Textbook QuestionDetermine the molecular and empirical formulas of the following: (b) the compound silicon tetrachloride, which has a silicon atom and four chlorine atoms and is used in the manufacture of computer chips871viewsHas a video solution.
Textbook QuestionDetermine the molecular and empirical formulas of the following: (a) the organic solvent benzene, which has six carbon atoms and six hydrogen atoms617viewsHas a video solution.
Textbook QuestionSilver metal reacts with chlorine (Cl2) to yield silver chlo-ride. If 2.00 g of Ag reacts with 0.657 g of Cl2, what is the empirical formula of silver chloride?561viewsHas a video solution.
Textbook QuestionWhat are the empirical formulas of substances with the following mass percent compositions? (c) Sodium thiosulfate (photographic 'fixer'): 30.36% O, 29.08% Na, 40.56% S505viewsHas a video solution.
Textbook QuestionWhat are the empirical formulas of substances with the following mass percent compositions? (b) Ilmenite (a titanium-containing ore): 31.63% O, 31.56% Ti, 36.81% Fe543viewsHas a video solution.
Textbook QuestionWhat are the empirical formulas of substances with the following mass percent compositions? (a) Aspirin: 4.48% H, 60.00% C, 35.52% O1134viewsHas a video solution.
Textbook QuestionA chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound. c. 2.128 g Be, 7.557 g S, 15.107 g O1632views2rankHas a video solution.
Textbook QuestionA chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound. b. 2.677 g Ba, 3.115 g Br315viewsHas a video solution.
Textbook QuestionA chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each compound. a. 1.245 g Ni, 5.381 g I464viewsHas a video solution.
Textbook QuestionFerrocene, a substance proposed for use as a gasoline additive, has the percent composition 5.42% H, 64.56% C, and 30.02% Fe. What is the empirical formula of ferrocene?468viewsHas a video solution.
Open QuestionCalculate the empirical formula for each stimulant based on its elemental mass percent composition. a. nicotine (found in tobacco leaves): C 74.03%, H 8.70%, N 17.27%1191views
Open QuestionCalculate the empirical formula for each natural flavor based on its elemental mass percent composition. b. vanillin (responsible for the taste and smell of vanilla): C 63.15%, H 5.30%, O 31.55%771views
Textbook QuestionWhat is the empirical formula of stannous fluoride, the first fluoride compound added to toothpaste to protect teeth against decay? Its mass percent composition is 24.25% F, 75.75% Sn.436viewsHas a video solution.
Open QuestionCalculate the empirical formula for each natural flavor based on its elemental mass percent composition. a. methyl butyrate (component of apple taste and smell): C 58.80%, H 9.87%, O 31.33%900views
Textbook QuestionWhat are the empirical formulas of each of the following substances? (c) Zircon, a mineral from which cubic zirconia is made: 34.91% O, 15.32% Si, 49.77% Zr537viewsHas a video solution.
Textbook QuestionWhat are the empirical formulas of each of the following substances? (b) Magnetite, a naturally occurring magnetic mineral: 72.36% Fe, 27.64% O534viewsHas a video solution.
Textbook QuestionWhat are the empirical formulas of each of the following substances? (a) Ibuprofen, a headache remedy: 75.69% C, 15.51% O, 8.80% H460viewsHas a video solution.
Textbook QuestionThe elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID]) is 75.69% C, 8.80% H, and 15.51% O. Determine the empirical formula of ibuprofen.1063viewsHas a video solution.
Textbook QuestionThe elemental mass percent composition of ascorbic acid (vitamin C) is 40.92% C, 4.58% H, and 54.50% O. Determine the empirical formula of ascorbic acid.1719viewsHas a video solution.
Textbook QuestionA 45.2-mg sample of phosphorus reacts with selenium to form 131.6 mg of the selenide. Determine the empirical formula of phosphorus selenide.1484views1commentsHas a video solution.
Textbook QuestionCombustion analysis of a hydrocarbon produces 33.01 g CO2 and 13.51 g H2O. Calculate the empirical formula of the hydrocarbon.3820viewsHas a video solution.
Textbook QuestionCombustion analysis of a 31.472 mg sample of the widely used flame retardant Decabrom gave 1.444 mg of CO2. Is the molecular formula of Decabrom C12Br10 or C12Br10O?329viewsHas a video solution.
Textbook QuestionHeating elemental cesium and platinum together for two days at 973 K gives a dark red ionic compound that is 57.67% Cs and 42.33% Pt. (a) What is the empirical formula of the compound?274viewsHas a video solution.
Textbook QuestionUnder special conditions, sulfur reacts with anhydrous liquid ammonia to form a binary compound of sulfur and nitrogen. The compound is found to consist of 69.6% S and 30.4% N. Measurements of its molecular mass yield a value of 184.3 g>mol. The compound occasionally detonates on being struck or when heated rapidly. The sulfur and nitrogen atoms of the molecule are joined in a ring. All the bonds in the ring are of the same length. (a) Calculate the empirical and molecular formulas for the substance.767viewsHas a video solution.
Textbook QuestionA copper wire having a mass of 2.196 g was allowed to react with an excess of sulfur. The excess sulfur was then burned, yielding SO2 gas. The mass of the copper sulfide produced was 2.748 g. (b) What is its empirical formula?366viewsHas a video solution.
Textbook QuestionAn herbicide is found to contain only C, H, N, and Cl. The complete combustion of a 100.0-mg sample of the herbicide in excess oxygen produces 83.16 mL of CO2 and 73.30 mL of H2O vapor expressed at STP. A separate analysis shows that the sample also contains 16.44 mg of Cl. (c) What other information would you need to know about this compound to calculate its true molecular formula?499viewsHas a video solution.
Textbook QuestionReaction of gaseous fluorine with compound X yields a sin- gle product Y, whose mass percent composition is 61.7% F and 38.3% Cl. (a) What is a probable molecular formula for product Y, and what is a probable formula for X?340viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that contains only iron and oxygen and is 22.27% oxygen?33viewsHas a video solution.
Open QuestionIn general, what does a subscript (such as the "2" in H2) tell you about the molecule?28viewsHas a video solution.
Open QuestionHow many atoms of oxygen are in the chemical formula 2Ca(ClO2)2?27viewsHas a video solution.
Open QuestionSome of the formulas below could be either molecular or empirical formulas; however, some could only be molecular formulas. Which of the following formulas must be molecular formulas? Select all that apply.35viewsHas a video solution.
Open QuestionA 4.08 g sample of a compound of nitrogen and oxygen contains 3.01 g of oxygen. What is the empirical formula?27viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that contains 75% Ag and 25% Cl by mass?29viewsHas a video solution.
Open QuestionDetermine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.31viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that contains 85 Ag and 15 F by mass?30viewsHas a video solution.
Open QuestionWhich pair consists of a molecular formula and its corresponding empirical formula?33viewsHas a video solution.
Open QuestionWhat is the simplest whole-number ratio of atoms in a molecule or formula unit called?28viewsHas a video solution.
Open QuestionDetermine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.36viewsHas a video solution.
Open QuestionWhat is the empirical formula for a compound if a sample contains 1.0 g of S and 1.5 g of O?26viewsHas a video solution.
Open QuestionA molecule of a certain compound contains two nitrogen atoms and four oxygen atoms. What is the molecular formula for this compound?28viewsHas a video solution.
Open QuestionA chemist decomposes samples of several compounds; the masses of their constituent elements are listed. calculate the empirical formula for each compound.121viewsHas a video solution.
Open QuestionBased on the mole ratio you determined in part c, what is the empirical formula of this compound?262viewsHas a video solution.
Open QuestionA sample of an iron-containing compound is 22.0% iron, 50.2% oxygen, and 27.8% chlorine by mass.119viewsHas a video solution.
Open QuestionA molecule's molecular formula and its empirical formula always share the same chemical properties265viewsHas a video solution.
Open QuestionWhich of the following statements about empirical formulas is incorrect?115viewsHas a video solution.
Open QuestionWhich of the following is already in its empirical formula?119viewsHas a video solution.
Open QuestionA substance has a molecular formula of c8h10n4o2. the empirical formula is -152viewsHas a video solution.
Open QuestionWhat are the subscripts in the empirical formula of this compound?113viewsHas a video solution.
Open QuestionThe lowest whole number ratio of the elements in a compound is called105viewsHas a video solution.
Open QuestionDetermine the empirical formula for a compound that contains C, H and O. It contains 52.14% C and 34.73% O by mass.59viewsHas a video solution.
Open QuestionDetermine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.67viewsHas a video solution.
Open QuestionThe elemental mass percent composition of succinic acid is 40.68% C, 5.12% H, and 54.19% O.14viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that contains 27.0% S, 13.4% O, and 59.6% Cl by mass?13viewsHas a video solution.
Open QuestionThe lowest whole-number ratio of the elements in a compound is called the18viewsHas a video solution.
Open QuestionA compound consists of 37.51 g C, 4.20 g H, and 58.29 g O. What is the empirical formula?12viewsHas a video solution.
Open QuestionTo indicate the number of atoms of each element present in a molecular compound, scientists use -10viewsHas a video solution.
Open QuestionWhat is the empirical formula for a compound if a sample contains 3.72 g of P and 21.28 g of Cl?14viewsHas a video solution.
Open QuestionIn [Cu(NH3)4]2+, the subscript 4 indicates which of the following?14viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?9viewsHas a video solution.
Open QuestionWhich number indicates the number of atoms of each element in a molecule of a substance14viewsHas a video solution.
Open QuestionThe elemental mass percent composition of malonic acid is 34.63% C, 3.87% H, and 61.50% O.14viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that is 40% sulfur and 60% oxygen by weight?13viewsHas a video solution.
Open QuestionUse subscripts to represent the number of each type of atom or ion in a molecule.7viewsHas a video solution.
Open QuestionWhat is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass?9viewsHas a video solution.
Open QuestionWhat is the empirical formula for a compound that is 43.6% phosphorus and 56.4% oxygen?8viewsHas a video solution.