Phosphorous oxychloride (POCl3) is the starting compound for manufacturing substances used as flame retardants for plastics.  An 8.53 mg sample contains 1.72 mg of phosphorous.  What is the mass percentage of phosphorous in this compound?

Q: A 7.591-g gaseous mixture contains methane (CH₄) and butane (C₄H₁₀). Complete combustion to form…

A: Step-1CH416g + 2O2 → CO2 + 2H2OC4H1058g + 132 O2 → 4CO2 + 5H2O

Q: What is the mass in grams of each elemental sample? 1) 6.69 molmol W 2) 0.582 molmol Ba 3) 68.2…

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Q: alculate: c. Total number of ions in 5.82 g of SrH2 d. Mass in mg of 2.88 x 10 22 formula units of…

A: Number of moles is defined as the ratio of given mass by the molar mass. The formula to calculate…

Q: Elixirs such as Alka-Seltzer use the reaction of sodium bicarbonate with citric acid in aqueous…

A: Mass of NaHCO3 = 9.2×102 mg The balanced chemical equation for the reaction of sodium bicarbonate…

Q: An ionic compound MX3 is prepared according to the following unbalanced chemical equation.   M  +…

A: The number of moles of X2 (nX) is calculated using equation (1) in which N is the number of…

Q: 2NaI(aq)+Cl2(g)⟶I2(s)+2NaCl(aq)2NaI(aq)+Cl2(g)⟶I2(s)+2NaCl(aq)   How many grams of sodium iodide,…

A: The number of moles of a compound is calculated by taking the ratio between mass to the molar mass…

Q: What mass of SbF3 (179g x mol^-1) is needed to produce 1.00 g of Freon-12, CCl2F2 (molar mass =121 g…

A: We have chemical balanced equation of Freon-12 from SbF3 . We have to calculate the amount of SbF3…

Q: Hydrofluoric acid is a substance usedto etch glass. Determine the mass of 4.95 × 1 0 25 HFmolecules.

A: According to the mole concept, the number of moles is calculated by using the equation: Number of…

Q: how many ions or atoms of each element are in 160.5 g of the following substances?  a) H2 _?_ x1025…

A:

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: Galantamine is a drug given to patients who have Alzheimer's disease. Its chemical formula is…

A:

Q: the compound cisplatin Pt(NH3) 2Cl2 has been studied as an an antitumor agent. Cisplatain is…

A:

Q: Question attached

A: Interpretation - To find the number of molecules present in each of the samples.   Formula used -…

Q: Ethylenediaminetetraacetic acid (EDTA) is a chemical that binds metals such as lead, to treat lead…

A: The molecular formula of Ethylenediaminetetraacetic acid (EDTA) is C10H16N2O8. We know that the…

Q: which of the samples have the large numbers of molecules H2S04 ? (Atomic mass H = 1, O=16 S= 32) * O…

A: Given data, Atomic mass of H = 1g/mol Atomic mass of O = 16 g/mol Atomic mass of S = 32 g/mol

Q: A student, Ken, is given a mixture containing two nitrate compoundsnitrate compounds. The mixture…

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Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: For the reaction of sodium sulfide with iron(III) chloride below , you have 319.5 kg of sodium…

A: The number of moles of sodium sulfide and iron (III) chloride is 4094 mol and 3097 mol respectively.…

Q: A 10.68 g sample of compound that contains only carbon, hydrogen, and oxygen was analyzed through…

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Q: A 45.0-mg sample of boron reacts with oxygen to form 145 mg of the compound boron oxide. What is…

A: Empirical formula is the basic simple ratio formula of a molecule after finding the moles of that…

Q: Ammonium nitrate (NH4NO3) is a common fertilizer. Agronomists base the effectiveness of fertilizers…

A: 1) The mass percent of nitrogen in ammonium nitrate has to be calculated.

Q: compound has the mass percent data given below . Determine its empirical formula. 32.43 % carbon by…

A: Empirical formula of a chemical compound is the simplest positive integer ratio of atoms present in…

Q: Iron is found in Earth's crust as several iron compounds. Calculate the mass in kilograms of the…

A: A number of moles: The number of moles in any given sample can be estimated if the total mass of the…

Q: What is the mass percent of silicon dioxide (SiO2) if you are able to separate 2.202g out of a…

A: The mass percentage of a compound in a mixture is equal to the ratio of the mass of that compound…

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: barium chloride hydrate Mass percentage of H2O in hydrate (%):

A: Mass percentage of H2O  in barium chloride hydrate ( BaCl2.H2O)

Q: Iodine is prepared both in the laboratory and commercially by adding Cl2(g)to an aqueous solution…

A: When stoichiometric coefficient results in the equal number of atoms of each element on both the…

Q: Calculate the percent composition of oxygen in the following compounds: NaOH Al2(SO4)3 CaCO3 MnO2 In…

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Q: Question is attached

A: It is given that the molecular formula of the artificial sweetener i.e. aspartame is C14H18N2O5, To…

Q: Chemistry a student was given a sample of CaCO3 * XH2O to find the empirical formula. she measured…

A: CaCO3 .xH2O  upon heating  will lose its water and this a given sample will lose some of its mass…

Q: explain why the number of atoms and moles are different when the volumes are nearly identical?

A: 1. The table contains the data required to solve this problem.

Q: student is given a mixture containing two nitrate compounds. The mixture includesNaNO3 and Ca(NO3)2.…

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Q: 1.00 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: A student, Ken, is given a mixture containing two nitrate compounds. The mixture includes NaNO3 and…

A: Mass Percentage of NO3 in the mixture is 73.76%. it implies that 100 g of mixture contains 73.76 g…

Q: B. TRUE OR FALSE: Read each statement carefully. Write TRUE if the statement is correct and FALSE if…

A: Percentage composition gives a brief ideas about each elemental composition as follows.

Q: Calculate the percent by mass of each element in the following compounds. a. Methane, CH4 b.…

A: Percent by mass is simply the ratio of atomic mass of element present in compound to total molar…

Q: The compound cisplatin, Pt(NH3)2Cl2, has been studied extensively as an antitumor agent. It can be…

A: Given : Mass of K2PtCl4  = 0.4256 g Mass of NH3 =  0.2135 g

Q: 8.50 g of a certaln Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A:

Q: Determine the empirical formula of the compound according to its elemental analysis:  38.13% C by…

A: Determination of empirical formula The percentage composition of elements present in given compound…

Q: An unknown hydrocarbon is subjected to elemental analysis. It is determined to be 85.6% carbon and…

A: Mass % of Carbon = 85.6% Mass % of Hydrogen = 14.4% Empirical formula =?

Q: hat is the molecular formula of a compound containing 24.27 carbon, 4.07% hydrogen and 71.76%…

A: Given  Carbon = 24.27%  Hydrogen = 4.07%  Chlorine = 71.76%  Molar mass = 98.96 g/mol  Atomic weight…

Q: Magnesium hydroxide, Mg(OH)2, is a common antacid. Calculate the percent composition by mass of Mg…

A: molar mass of Mg(OH)2  = 58.32 g mol-1 molar mass of Mg = 24.30 g mol-1

Q: 3.9) A 3.87-mg sample of ascorbic acid (vitamin C) gives 5.80 mg COz and 1.58 mg H.O on combustion.…

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Q: Most fertilizers consist of nitrogen-containing compounds such as NH3, CO(NH2)2, NH4NO3, and…

A: Formula to calculate % composition:Mass % of element = mass of the element on the given formula /…

Q: A compound that is composed of only carbon and hydrogen contains 85.7% C and 14.3% H by mass. What…

A: Given data : A compound that is composed of only carbon and hydrogen contains 85.7% C and 14.3% H by…

Q: 3. A 5.000 g sample of an organic compound containing C, H, and O atoms was combusted and produced…

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Q: Given a raw material of 2000 g Salicylic acid and 2500 g Acetic Anhydride, the actual yield is 1180…

A: % mass composition is given by  = (molar mass / given mass) × 100

Q: Why should a pure compound have a definite composition by weight? how is it possible for two samples…

A: We need to explain why a pure compound is expected to have a definite composition.  Definite…

Q: 7. Calculate the molar mass of each of the following compounds. a. Fe,O,, iron(III) oxide b. BCl,…

A: Molar mass is the sum of atomic masses of all atoms present in the given Molecule.    Percentage…

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.