Calculate the empirical formula of each compound from the percent compositions given: (d) 55.3% K, 14.6% P, 30.1% O (e) 38.9% Ba, 29.4% Cr, 31.7% O (f) 3.99% P, 82.3% Br, 13.7

Q: An unknown compound has the following percent compositions: 64.80% C, 13.62% H and 21.58% O. a)…

A: Given -  Percent Composition - Carbon - 64.80% Hydrogen -13.62% Oxygen - 21.58% Assume 100 g mass of…

Q: A compound is 53.31% C, 11.18% H, and 35.51% O by mass. What is its empirical formula? Insert…

A: Calculation of empirical formula: Moles of C=53.3112=4.44 Moles of H=11.181=11.18 Moles of…

Q: In this reaction: Mg (s) + I2 (s) → Mgl2 (s), if 10.0 g of Mg reacts with 60.0 g of l2, and 57.14 g…

A: Given,     Mass of Mg = 10.0 g     Mass of I2   = 60.0 g     Actual yield of MgI2 = 57.14 g

Q: Calculate the empirical formula of a compound which contains 47.3 percent C, 10.6 percent H, and…

A: The unknown compound contains 47.3% C, 10.6% H, and 42.1% O by weight   We know that --- the atomic…

Q: Find the molecular formula of the following compounds. 1. A chloride of silicon contains 79.1%…

A: Answer

Q: Phenol is a compound of carbon, hydrogen and oxygen that is used commonly as disinfectant.…

A: Given data,Mass of sample=175mg=0.175gMass of CO2=491mg=0.491gMass of H2O=100mg=0.1g

Q: A given compound contains 23.8% S, 23.7% O, and 52.5% Cl by mass. Which compound below is consistent…

A: The molar amounts of given atoms in 100 grams sample is determined by dividing each atom by its…

Q: A particular compound is comprised only of the elements C, H, N, and Cl. Combustion analysis of…

A: Given that: Total mass of sample = 14.30 g Mass of CO2 = 31.22 g Mass of H2O = 6.764 g Mass % of N=…

Q: Carotene is the orange pigment responsible for the orange colour of carrots. It has a % composition…

A:

Q: What is the empirical formula of the compound with the following compositions: 20.02 percent Al,…

A:

Q: learn.lcps.org/common-assessment-delivery/start/4846618960?action=Donresume&submissionld=492623761…

A:

Q: Given the following two formulas representing the same compound. Which statement describes these fo…

A: Given, Formula of compounds Formula A : CH2O Formula B : C6H12O

Q: Given the empirical formula of NO2 and a molecular weight of 92.0 g/mol, what is the molecular…

A: atomic mass  N = 14 , O= 16

Q: 7-9. An organic compound is composed of 40.92 percent carbon, 4.58 percent hydrogen, and 54.50…

A: Empirical formula of a compound can be defined as the simplest whole number ratio of all atoms…

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

A: We have to predict the empirical formula of compound given that the 1.000 g of the given unknown…

Q: The analysis of a compound gives the following percent composition by mass: C: 57.28 percent; H:…

A: Let the mass of compound = 100 gram Therefore., Molar Mass of Carbon = 57.28 gram Mass of Hydrogen =…

Q: For the formula  K3N  What is the percent Nitrogen in the compound

A: Given, compound K3N Molar mass of K = 39 g/mol Molar mass of N = 14 g/mol

Q: Determine the empirical formulas of the compoundswith the following compositions: (a) 40.1 percent…

A: a) Calculate the number of moles of each element, 40.1 g C(1 mol/12.0107 g)=3.3387 mol C 6.6 g H(1…

Q: Using the exact mass of BaCl2 2H½O that you used (and molar masses to the appropriate BaCl2' 2H2O…

A: Barium in BaCl2.2H2O is precipitated as BaSO4. The mass of BaCl2.2H2O is = 0.9867 g The molar mass…

Q: A 10.13 gram sample of an organic compound containing C, H and o is analyzed by combustion analysis…

A: To find the empirical formula the number of moles should be calculated.  Moles = given mass/molar…

Q: The image shows the products of a combustion reaction of a hydrocarbon containing only carbon and…

A:

Q: Determine the molecular and empirical formulas for the substance shown in the ball-and-stick model…

A: The simplest whole number ratio of atoms present in a compound called empirical formula. Total…

Q: Which of the following 5.00 g samples contains the smallest percent oxygen? Calcium oxide…

A: Copper oxide would have smallest percent of oxygen .

Q: Succinic acid is an important chemical used in the manufacture of polyesters and plasticizers. It…

A: 0.390 mole of Succinic acid (S.A.) has a mass of 46.1gSo, Molecular mass of S.A.= 46.1g0.390mole =…

Q: Histamine is the chemical messenger that antihistamine cold and allergy medicines try to block.…

A: Given: Histamine contains only C, H and N. Mass of Histamine combusted = 0.765 g. Mass of CO2 formed…

Q: `Nicotine (C10H14N2), a plant alkaloid, is an oily liquid that makes up between 0.6 to 3% of a…

A:

Q: A commonly used to preservative has the following percent composition: 68.85% C, 4.95% H, and 26.21%…

A: It is the formula which expresses the smallest whole number ratio of the constituent atom within…

Q: 7. A sample of aluminum weighing 0.135 g combined with sulfur to form 0.375 g of aluminum sulfide.…

A: It is given that 0.135 g of aluminium is combined with sulphur to form 0.375 g of Aluminium…

Q: Hydrated nickel(11) is a beautiful, green, crystalline compound. When heated strongly, the compound…

A: Initially we find the loss of water moles and NiCl2 moles after dehydrated. Moles= weight/molar mass

Q: The human body excretes nitrogen in the form of urea,NH₂CONH₂. The key biochemical step in urea…

A: Formula of Urea is NH2CONH2  molecular mass of urea = 60 amu Formula of Arginine is C6H14N4O2…

Q: Caffeine, an extremely popular chemical amongst students and teachers alike, is composed of four…

A: Given, carbon  49.48 % hydrogen  5.19 % nitrogen 28.85 % oxygen  16.48 %

Q: Combustion analysis of 127.81 mg of an unknown compound containing C, H and O produced 290.5 mg of…

A:

Q: Aspirin, C9H8O4, is a common pain reliever and is also often given in low doses daily for prevention…

A: Given :- number of moles of aspirin (C9H8O4) in sample = 0.0745 mol  To calculate :- mass of aspirin…

Q: Citric acid (C6H3O7), named for its natural occurrence in citrus fruits, is produced in large…

A: Given; C12H22O11 + 3O2 ➝ 2C6H8O7 + 3H2O Note: (1Kg = 1000g) Mass of sucrose (C12H22O11) = 600.0 Kg =…

Q: A 4.369 gram sample of an organic compound containing C, H and O is analyzed by combustion analysis…

A: The questions is based on elemental analysis. we have been given mass of carbon dioxide & water…

Q: 1.) Determine the empirical formula for the compound with the molecular formula B2Cl4   Empirical…

A:

Q: A sample of aspirin (acetyl salicyclic acid) of molecular mass 180, on analysis was found to contain…

A: Given data contains, Mass percentage of carbon in aspirin is 60%. Mass percentage of hydrogen in…

Q: aler completng the lab. Answer in the space provided. 1. A student reacted 0.500 g of Pb(NO1)2 with…

A:

Q: Determine the empirical formulas for compounds with the following percent compositions. (a) 43.64%…

A: Percent composition of all the elements present are given.We have to calculate empirical formula of…

Q: Add subscripts to complete the empirical formulas of the compounds with the following compositions:…

A: Answer: Empirical formula of a compound is basically the formula in which different atoms are…

Q: A compound contains C,H and N . combustion of 35.0mg  of the compound produces 33.5mg of co2 and…

A: Since all the C in CO2 and H in H2O is coming from the compound only. Hence mole of C in CO2 and H…

Q: A 0.1005 g sample of menthol (a compound comprised of C, H and O) produces 0.2829 g of carbon…

A: Mass of menthol = 0.1005g Mass of CO2 =0.2829 g Mass of H2O =0.1159 g

Q: If PCL5=0.012 and PCL3 =0.068 and Cl2=0.068 what fraction of PCl5 has decomposed

A:

Q: An elemental analysis of a compound containing S and O produce 50.00 % S and the rest is oxygen.…

A:

Q: A student is running an experiment in which 28.9 grams of CoSO4 is needed, but the only jar of…

A: Mass of CoSO4 ( anhydrous ) = 28.9 g Molar mass of CoSO4  = 154.99 g/mol Molar mass of CoSO4 . 7H2O…

Q: What is the mass percent of carbon in the following compound? C4H10 O4

A:

Q: A compound is 40.0% C, 6.70% H, and 53.3% O by mass. Assume that we have a 100.-g sample of this…

A: Assuming the empirical formula of the compound is CaHbOc. And mass of sample = 100 g Given : mass…

Q: The formula for rust can be represented by Fe2O3. How many moles of Fe are present in 27.9g of the…

A: Each mole of Fe2O3 contains two moles of Fe atom therefore, total number of moles of Fe present in…

Q: Which of the following unitless setups would help determine how many formula units of KMNO, are…

A: The mole is the measure of the number of atoms molecules or ions present in a given amount of…

Q: Calculate the empirical formula of a compound that is 68.2% arsenic, 2.81% hydrogen, and 29.0%…

A: The empirical formula mass of a compound refers to the sum of the atomic masses of various atoms…

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.