Chemistry Chemistry Practice Problems Solutions Library

Empirical Formula Solutions Library

Access 245 Empirical Formula video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Empirical Formula learn videos.

Browse Solutions

245 solutions

Empirical Formula

Q. Give the empirical formula of dimethylmercury. ((CH3)2Hg).

Solved • Mar 25, 2020

Empirical Formula

Q. An unknown compound was determined to be 74.97% carbon, 8.39% hydrogen, and 16.64% oxygen. Calculate the empirical formula.

Solved • Mar 25, 2020

Empirical Formula

Q. An unknown compound was determined to be 74.97% carbon, 8.39% hydrogen, and 16.64% oxygen. Calculate the empirical formula.

Solved • Mar 12, 2020

Empirical Formula

Q. Ethylene glycol, which consists of C, H, and O, can be used as an antifreeze in automobile engines. A 20.69 g of ethylene glycol sample contains 8....

Solved • Nov 28, 2019

Empirical Formula

Q. Find the empirical formula of a Gallium oxide in which Gallium makes up 68.5% of the mass.A. GaO B. GaO2 C. GaO3 D. Ga2O4 E. GeO2

Solved • Oct 3, 2019

Empirical Formula

Q. Determine the empirical formula for a compound that is 36.86% N and 63.14% O by mass.A) NOB) N2OC) NO2D) N2O3E) NO3

Solved • Sep 30, 2019

Empirical Formula

Q. Determine the molecular formula of a compound that has a molar mass of 183.2 g/mol and an empirical formula of C2H5O2.a. C4H10O4b. C6H15O6c. C2H5O2...

Solved • Sep 30, 2019

Empirical Formula

Q. β-Carotene, an organic strongly colored red-orange pigment abundant in plants and fruits, has a molecular formula of C40H56. What is its empirical ...

Solved • Sep 18, 2019

Empirical Formula

Q. A 4.7 gram sample contains 1.82 g calcium, 0.94 g phosphorus and the rest is oxygen. What is the empirical formula for this compound?A. Ca15PO4    ...

Solved • Sep 18, 2019

Empirical Formula

Q. A 0.50g sample of a compound contains 0.40g of C and 0.10g of H. What is the empirical formula of this compound?a) C4H     b) CH4     c) CH2     d)...

Solved • Sep 14, 2019

Empirical Formula

Q. What is the empirical formula of a compound that contains 29% Na, 41% S, and 30% O by mass?A. Na2S2O3B. NaSO2C. NaSOD. NaSO4E. Na2S2O6

Solved • Sep 13, 2019

Empirical Formula

Q. What is the empirical formula of ascorbic acid, given that the pseudoformula is c3.407h4.53o3.406? Express your answer as a chemical formula?

Solved • Sep 3, 2019

Empirical Formula

Q. What is the empirical formula of a substance that contains 2.64 g of C, 0.444 g of H, and 3.52 g of O?

Solved • Sep 1, 2019

Empirical Formula

Q. What is the empirical formula of a compound that is 62.0% C, 10.4% H, and 27.5% O by mass?

Solved • Sep 1, 2019

Empirical Formula

Q. A compound composed of only hydrogen and oxygen is 5.94% hydrogen by mass. The molar mass of this compound is 34.02 g/mol. What is the compound's m...

Solved • Sep 1, 2019

Empirical Formula

Q. A compound has a molar mass of 180.18 g/mol. Given the following percent composition, calculate the molecular formula. 39.99% C, 6.73% H, 53.28% O

Solved • Sep 1, 2019

Empirical Formula

Q. An estrogen compound with the empirical formula C12H17O2 has a molecular mass of 386.6 g/mol. What is the value of n necessary to find the molecula...

Solved • Sep 1, 2019

Empirical Formula

Q. A compound composed of only carbon and hydrogen is 25.2% hydrogen by mass. The empirical formula for this compound is.

Solved • Sep 1, 2019

Empirical Formula

Q. An iron chloride compound contains 55.85 grams of iron and 106.5 grams of chlorine. What is the most likely empirical formula for this compound?

Solved • Sep 1, 2019

Empirical Formula

Q. A chromium oxide compound contains 104.0 grams of chromium and 48.0 grams of oxygen. What is the most likely empirical formula of this compound?

Solved • Sep 1, 2019

Empirical Formula

Q. What is the value of n when the empirical formula is C 3H5 and the molecular mass is 205.4 g/mol?

Solved • Sep 1, 2019

Empirical Formula

Q. Vitamin C is known chemically by the name ascorbic acid. Determine the empirical formula of ascorbic acid if it is composed of 40.92% carbon, 4.58%...

Solved • Sep 1, 2019

Empirical Formula

Q. An unknown substance has the composition of 74.97% C, 7.4% H and 17.6% O. The compound has a molar mass of 272.3 g/mole. What is the molecular form...

Solved • Aug 25, 2019

Empirical Formula

Q. Ibuprofen has the following mass percent composition. What is the empirical formula of ibuprofen?C: 75.69%H: 8.80%O: 15.51%

Solved • Aug 8, 2019

Empirical Formula

Q. What are the empirical and molecular formulas of nicotine?

Solved • Aug 7, 2019

Empirical Formula

Q. What is the empirical formula for glucose?

Solved • Aug 7, 2019

Empirical Formula

Q. Calculating the molecular formula of caffeine? Caffeine, contains 49.48% Carbon, 5.15% Hydrogen, 28.87% nitrogen, 16.49% oxygen. It has a molar mas...

Solved • Aug 7, 2019

Empirical Formula

Q. In a student experiment, the empirical formula of a copper halide was found by adding aluminum metal to an aqueous solution of the halide. displaci...

Solved • Jul 9, 2019

Empirical Formula

Q. An unknown compound was determined to be 74.97% carbon, 8.39% hydrogen, and 16.64% oxygen. Calculate the empirical formula.

Solved • Jul 9, 2019

Empirical Formula

Q. You and a partner are asked to complete a lab entitled “Oxides of Ruthenium” that is scheduled to extend over two lab periods. The first lab, which...

Solved • Nov 12, 2018

Empirical Formula

Q. A compound composed of 2.1% H, 29.8% N, and 68.1% O has a molar mass of approximately 50 g/mol.What is the molecular formula of the compound?

Solved • Nov 12, 2018

Empirical Formula

Q. Diazomethane is a highly poisonous, explosive compound. The reason it is explosive is that it readily evolves N2. Diazomethane has the following co...

Solved • Nov 12, 2018

Empirical Formula

Q. A 2.144-g sample of phosgene, a compound used as a chemical warfare agent during World War I, contains 0.260 g of carbon, 0.347 g of oxygen, and 1....

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical and molecular formulas of each of the following substances. For example, butane has an empirical formula of C2H5 (lowest wh...

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical and molecular formulas of each of the following substances. For example, butane has an empirical formula of C2H5 (lowest wh...

Solved • Oct 31, 2018

Empirical Formula

Q. Could the empirical formula determined from chemical analysis be used to tell the difference between acetylene, C2H2, and benzene, C6H6?

Solved • Oct 31, 2018

Empirical Formula

Q. Serotonin is a compound that conducts nerve impulses in the brain. It contains 68.2 mass percent C, 6.86 mass percent H, 15.9 mass percent N, and 9...

Solved • Oct 31, 2018

Empirical Formula

Q. The koala dines exclusively on eucalyptus leaves. Its digestive system detoxifies the eucalyptus oil, a poison to other animals. The chief constitu...

Solved • Oct 31, 2018

Empirical Formula

Q. The koala dines exclusively on eucalyptus leaves. Its digestive system detoxifies the eucalyptus oil, a poison to other animals. The chief constitu...

Solved • Oct 31, 2018

Empirical Formula

Q. An oxybromate compound, KBrOx, where  x  is unknown, is analyzed and found to contain 47.85 % Br.What is the value of x?

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical formula of the following compound if a sample contains 0.104 mol K, 0.052 mol C, and 0.156 mol O.

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical and molecular formulas of each of the following substances.Styrene, a compound substance used to make Styrofoam® cups and i...

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical and molecular formulas of each of the following substances.Monosodium glutamate (MSG), a flavor enhancer in certain foods, ...

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical formulas of the compounds with the following compositions by mass.21.7% C, 9.6% O, and 68.7% F

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical formulas of the compounds with the following compositions by mass.32.79% Na, 13.02% Al, and the remainder % F

Solved • Oct 31, 2018

Empirical Formula

Q. Determine the empirical formulas of the compounds with the following compositions by mass.62.1% C, 5.21% H, 12.1% N, and the remainder O

Solved • Oct 31, 2018

Empirical Formula

Q. Give the empirical formula of the following compound if a sample contains 11.66 g iron and 5.01 g oxygen.

Solved • Oct 31, 2018

Empirical Formula

Q. A compound isolated from the rind of lemons is found to be 88.14 % carbon and 11.86 % hydrogen by mass.What is the empirical formula?

Solved • Oct 31, 2018

Empirical Formula

Q. A compound isolated from the rind of lemons is found to be 88.14 % carbon and 11.86 % hydrogen by mass.The molar mass is determined to be 136.26 g/...

Solved • Oct 31, 2018

Empirical Formula

Q. A sample of a compound is decomposed in the laboratory and produces 165 g carbon, 27.8 g hydrogen, and 220.2 g oxygen. Calculate the empirical form...

Solved • Oct 31, 2018

Empirical Formula

Q. Vanadium forms four different oxides in which the percent by mass of vanadium is respectively 76 % , 68 % , 61 % , and 56 % .Give the name of the f...

Solved • Oct 31, 2018

Empirical Formula

Q. Vanadium forms four different oxides in which the percent by mass of vanadium is respectively 76 % , 68 % , 61 % , and 56 % .Give the name of the f...

Solved • Oct 31, 2018

Empirical Formula

Q. A compound of molar mass 229 g/mol contains only carbon, hydrogen, iodine, and sulfur. Analysis shows that a sample of the compound contains 6 time...

Solved • Oct 31, 2018

Empirical Formula

Q. Estradiol is a female sexual hormone that causes maturation and maintenance of the female reproductive system. Elemental analysis of estradiol gave...

Solved • Oct 31, 2018

Empirical Formula

Q. Epsom salts is a hydrated ionic compound with the following formula: MgSO4 • xH2 O. A 4.93 g sample of Epsom salts is heated to drive off the water...

Solved • Oct 31, 2018

Empirical Formula

Q. A compound of molar mass 177 g/mol contains only carbon, hydrogen, bromine, and oxygen. Analysis reveals that the compound contains 8 times as much...

Solved • Oct 31, 2018

Empirical Formula

Q. A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each co...

Solved • Oct 31, 2018

Empirical Formula

Q. A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each co...

Solved • Oct 31, 2018

Empirical Formula

Q. A chemist decomposes samples of several compounds; the masses of their constituent elements are listed. Calculate the empirical formula for each co...

Solved • Oct 31, 2018

Empirical Formula

Q. The elemental mass percent composition of ibuprofen (a nonsteroidal anti-inflammatory drug [NSAID]) is 75.69 % C, 8.80 % H, and 15.51 % O.Determine...

Solved • Oct 31, 2018

Empirical Formula

Q. From the given empirical formula and molar mass, find the molecular formula of each compound.C2HCl, 120.96 g/mol

Solved • Oct 31, 2018

Empirical Formula

Q. From the given empirical formula and molar mass, find the molecular formula of each compound.C5H10NS2, 296.56 g/mol

Solved • Oct 31, 2018

Empirical Formula

Q. A gaseous hydrogen and carbon containing compound is decomposed and found to contain 82.66% carbon and 17.34% hydrogen by mass. The mass of 158 mL ...

Solved • Oct 31, 2018

Empirical Formula

Q. A compound is 52.14% C, 13.13% H, and 34.73% O by mass.What is the empirical formula of the compound?

Solved • Oct 31, 2018

Empirical Formula

Q. A compound has the empirical formula CH2O and a formula mass of 120.10 amu.What is the molecular formula of the compound?

Solved • Oct 31, 2018

Empirical Formula

Q. A hydrate of copper (II) chloride has the following formula: CuCl2 • xH2 O. The water in a 3.41-g sample of the hydrate was driven off by heating. ...

Solved • Oct 31, 2018

Empirical Formula

Q. A chromium-containing compound has the formula FexCryO4 and is 28.59% oxygen by mass.Find x.

Solved • Oct 31, 2018

Empirical Formula

Q. A chromium-containing compound has the formula FexCryO4 and is 28.59% oxygen by mass.Find y.

Solved • Oct 31, 2018

Empirical Formula

Q. Three pure compounds are formed when 1.00-g samples of element X combine with, respectively, 0.472 g, 0.315 g , and 0.944 g of element Z. The first...

Solved • Oct 31, 2018

Empirical Formula

Q. Combustion analysis of a 13.42-g sample of equilin (which contains only carbon, hydrogen, and oxygen) produced 39.61 g CO2 and 9.01 g H2 O. The mol...

Solved • Oct 31, 2018

Empirical Formula

Q. A 44.4 mg sample of phosphorus reacts with selenium to form 129 mg of the compound.What is the empirical formula of the phosphorus selenide?

Solved • Oct 31, 2018

Empirical Formula

Q. Calculate the empirical formula for each of the following stimulants based on their elemental mass percent composition.nicotine (found in tobacco l...

Solved • Oct 31, 2018

Empirical Formula

Q. The 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 ...

Solved • Oct 31, 2018

Empirical Formula

Q. A 0.72 mg sample of nitrogen reacts with chlorine to form 6.186 mg of the chloride.What is the empirical formula of the nitrogen chloride?

Solved • Oct 31, 2018

Empirical Formula

Q. In addition to carbon monoxide CO and carbon dioxide CO2, there is a third compound of carbon and oxygen called carbon suboxide. If a 2.500 g sampl...

Solved • Oct 25, 2018

Empirical Formula

Q. The structural formulas of the compounds n-butane and isobutane are shown below.Determine the empirical formula of each.

Solved • Oct 25, 2018

Empirical Formula

Q. The structural formulas of the compounds n-butane and isobutane are shown below.Which formulas-empirical, molecular, or structural-allow you determ...

Solved • Oct 25, 2018

Empirical Formula

Q. Consider the following four formulas: SO2, B2H6, CO, C4H2O2.Which of these formulas could be only an empirical formula, only a molecular formula, e...

Solved • Oct 25, 2018

Empirical Formula

Q. What is the empirical formula of the compound formed between W6+ and O2-–?

Solved • Oct 25, 2018

Empirical Formula

Q. What is the empirical formula for manganese(II) oxide?

Solved • Oct 25, 2018

Empirical Formula

Q. Cyclopropane is an interesting hydrocarbon. Instead of having three carbons in a row, the three carbons form a ring, as shown in this perspective d...

Solved • Oct 25, 2018

Empirical Formula

Q. What are the molecular and empirical formulas for each of the following compounds?Write the empirical formula for the following compound.

Solved • Oct 25, 2018

Empirical Formula

Q. Two substances have the same molecular and empirical formulas.Does this mean that they must be the same compound?

Solved • Oct 25, 2018

Empirical Formula

Q. Write the empirical formula corresponding to each of the following molecular formulas.Al2 Br6,

Solved • Oct 25, 2018

Empirical Formula

Q. A compound with the empirical formula CH2 has a molar mass of 98 g/mol. What is the molecular formula for this compound?

Solved • Oct 23, 2018

Empirical Formula

Q. Vitamin A has a molar mass of 286.4 g/mol and a general molecular formula of C xHyE, where E is an unknown element. If vitamin A is 83.86% C and 10...

Solved • Oct 17, 2018

Empirical Formula

Q. A major textile dye manufacturer developed a new yellow dye. The dye has a percent composition of 75.95% C, 17.72% N, and 6.33% H by mass with a mo...

Solved • Oct 16, 2018

Empirical Formula

Q. Polymers are large molecules composed of simple units repeated many times. Thus, they often have relatively simple empirical formulas. Calculate th...

Solved • Oct 16, 2018

Empirical Formula

Q. Determine the empirical and molecular formula for chrysotile asbestos. Chrysotile has the following percent composition: 28.03% Mg, 21.60% Si, 1.16...

Solved • Oct 16, 2018

Empirical Formula

Q. Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and chlorine. It has a molar mass of 99 g/mol. Analysis ...

Solved • Oct 16, 2018

Empirical Formula

Q. A compound of carbon and hydrogen contains 92.3% C and has a molar mass of 78.1 g/mol. What is its molecular formula?

Solved • Oct 16, 2018

Empirical Formula

Q. Determine the molecular formulas to which the following empirical formula and molar mass pertain: NPCl2 (347.64 g/mol).

Solved • Oct 16, 2018

Empirical Formula

Q. Determine the empirical formulas for the following compounds:(d) nicotine, C10H14N2

Solved • Oct 16, 2018

Empirical Formula

Q. Determine the empirical formulas for the following compounds:(b) citric acid, C6H8O7

Solved • Oct 16, 2018

Empirical Formula

Q. Serotonin (ℳ = 176 g/mol) transmits nerve impulses between neurons. It contains 68.2% C, 6.86% H, 15.9% N, and 9.08% O by mass. What is its molecul...

Solved • Oct 15, 2018

Empirical Formula

Q. Cortisol (ℳ = 362.47 g/mol) is a steroid hormone involved in protein synthesis. Medically, it has a major use in reducing inflammation from rheumat...

Solved • Oct 12, 2018

Empirical Formula

Q. Nicotine is a poisonous, addictive compound found in tobacco. A sample of nicotine contains 6.16 mmol of C, 8.56 mmol of H, and 1.23 mmol of N [1 m...

Solved • Oct 12, 2018

Empirical Formula

Q. A sample of 0.600 mol of a metal M reacts completely with excess fluorine to form 46.8 g of MF2.What element is represented by the symbol M?

Solved • Oct 12, 2018

Empirical Formula

Q. A chloride of silicon contains 79.1 mass % Cl. If the molar mass is 269 g/mol, what is the molecular formula?

Solved • Oct 12, 2018

Empirical Formula

Q. What is the molecular formula of the following compound?Empirical formula C7H4O2 (ℳ = 240.20 g/mol)

Solved • Oct 12, 2018