Q;) a compound is found to contain 40 % carbon, 6.7 % hydrogen, and 53 % oxygen by weight. What is the empirical formula for this compound? (Where the atomic weight of O is 16 and for H is 1 and for C is 12)

Q: A particular ore of lead, galena, is 10.0% lead sulfide, PbS, and 90.0% impurities by weight. What…

A: we  need to calculate mass of Pb in the ore

Q: The mass of an organic compound was found to be 58.053 86 by mass spectrometry. Is the sample C₂HN₂,…

A: The solution is given below -

Q: A compound is found to contain 7.962% silicon, 20.10% chlorine, and 71.94% iodine by weight. (To…

A: Here, we have to find the empirical formula and molecular formula of the compound % of Si = 7.962  %…

Q: Complete the Avogadro's Statement for the element hydrogen: 1 mole of hydrogen hydrogen atoms =…

A: A mole is defined as that amount of the substance which has mass equal to gram atomic mass if the…

Q: a) Copper(II) fluoride contains 37.42% F by mass. Calculate the mass of fluorine (in g) contained in…

A:

Q: An organic compound used as a food additive in beverages and baking powders, is composed of 41.39%…

A: Given  % C  = 41.39 % H = 3.47  % O = 100 -( 41.39 + 3.47 ) %         = 55.14 %  Empirical Formula =…

Q: composition by mass: C – 8.7 % ; F -13.8 %; Cl – 77.5 % Calculate the empirical formula of CFC11.…

A: 1) First convert mass into mole by dividing molar mass Then divide least value of mole to all values…

Q: A certain sample of butane fuel (C4H10) was analyzed and found to contain 1.8 x 1024 hydrogen atoms.…

A: Octane is a hydrocarbon of alkane category. Its general formula is CnH2n+2 where n is an integer.The…

Q: How many moles of tin, Sn are needed to give 1.39x1022 tin atoms? Starting Unit (include substance):…

A:

Q: Diamond is one form of an elemental carbon. An engagement ring contains a diamond weighing 1.25…

A: Given, Diamond is one form of an elemental carbon and an engagementring contains a diamond weighing…

Q: - Why do we use the "mole" in chemistry. How does it relate to the periodic table? a) What is the…

A: The relationship between mole and mass is as follows:       Mole = Mass Molar mass ⇒Mass =…

Q: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

A: (a) Determine the mass of sodium metal that contains the same number of moles as 87.2 g of copper…

Q: Determine the empirical formula for each substance. A dead alkaline battery is found to contain a…

A:

Q: C4H10 and C6H12 are both hydrocarbons. Whic one contains higher mass percentage of carbon?

A:

Q: Zinc Oxide decomposes into zinc and oxygen. If 52.1 g of zinc oxide decomposes to form 41.8 g of…

A: Given,52.1 g of zinc oxide, 41.8 g of zinc.The balanced chemical reaction of decomposition of zinc…

Q: A compound is found to contain 30.45% nitrogen and 69.55% oxygen by weight. (Enter the elements in…

A:

Q: Ammonium nitrate is a common ingredient found in many fertilizers and is the main component that…

A: Introduction Ammonium nitrate has the chemical formula NH4NO3, and ammonium hydrogen phosphate has…

Q: cond A B C D sketch of molecules in it H H C1O H-Ö C нӧ- H H :O: H H H-Ö H-Ö C H C || :0: C O: 010…

A: first, we have to find empirical formula of the given compounds

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

A: Since you have posted a question with multiple sub- parts, we will solve first three sub- parts for…

Q: Phosphoric acid is a colorless, syrupy liquid used in detergents, fertilizers and carbonated…

A: Molecular formula of phosphoric acis is H3PO4.  Molecular mass is determined by the sum of atomic…

Q: 4.) How many moles are present in 9.15 x 1021 molecules of CO2? (type the final answer with a…

A:

Q: c solvent) that contains 1.00 × 1012 molecules

A: moles of CHCl3 = ( molecules / Avagadro number )  moles of CHCl3 = ( 1.00 • 10^12 ) / ( 6.022 •…

Q: Nitrogen atoms on a distant planet have two dominant isotopes: 69.9% 14N (atomic mass 14.003

A: Given data is  N14 Atomic mass= 14.003 g/mol, abundance= 69.9%  N15 atomic mass = 15.000 g/mol,…

Q: A compound that contains only carbon, hydrogen, and sulfur is 30.8 % S and 57.6 % C by mass. What is…

A: The given data contains, Sulphur = 30.8 % Carbon = 57.6 % The % of Hydrogen =100%-(30.8+57.6)%= 11.6…

Q: Benzene has the molecular formula CcH. A sample of benzene has a mass of 43.95 g. (a) Calculate the…

A:

Q: 3. An oxide of chromium is made up of 5.20g chromium and 5.60 g oxygen. What is the empirical…

A: Given,  Mass of Cr = 5.20 g  Mass of O = 5.60 g What is the empirical formula of the oxide = ?

Q: a) A compound is found to contain 52.13 % carbon, 13.15 % hydrogen, and 34.72 % oxygen by mass.What…

A: (a) Given: Mass percent composition of hydrogen is 13.15% Mass percent composition of carbon is…

Q: 4A. How many grams of potassium chloride are produced from... ...2.50 g of potassium and excess…

A:

Q: One form of asbestos called chrysotile is considered to be a human carcinogen. Mass analysis shows…

A: Given: 26.3% Mg, 20.2% Si, 1.45% H   Let mass of compound be 100 g. then it contain 26.3 g of Mg,…

Q: ) Determine the empirical formula of a compound that contains sulfur and oxygen. It has

A: Simplest whole number ratio of constituent atoms within the molecule is called empirical formula…

Q: The element silver (Ag) has two naturally occurring isotopes:109 Ag and 107Ag with a mass of 106.905…

A:

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.