There are various methods for finding the composition of analloy (a metal-like mixture). Show that calculating the mass % of Mg in a magnesium-aluminum alloy (d=2.40 g/cm³) gives thesame answer (within rounding) using each of these methods: (a) a 0.263-g sample of alloy (d=of Mg 1.74 g/cm³; d=of Al 2.70 g/cm³); (b) an identical sample reacting with excess aque-ous HCl forms 1.38x10^-2mol of H₂; (c) an identical samplereacting with excess O₂ forms 0.483 g of oxide.

Q: A 1.00 g sample of a magnesium-aluminum alloy yields 0.107 g H2 when treated with an excess of…

A: Given, Mass of Mg-Al alloy = 1.00 g Mass of H2 produced = 0.107 g   Moles of H2 produced can be…

Q: (a) If an automobile travels 225 mi with a gas mileage of 20.5mi/gal, how many kilograms of CO2 are…

A: The combustion equation for octane can be written as: Distance = 225 mi Mileage = 20.5 mi / gallon…

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A:

Q: Which of the following diagrams best represents the following reaction

A: Given  2H2 + O2 → 2 H2O  + 571.6 kJ

Q: A. Sucralose, an artificial sweetener comen used by diabetic patients, II. Solve the following…

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Q: A dark brown binary compound contains oxygen and ametal. It is 13.38% oxygen by mass. Heating it…

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Q: In 1987 the first substance to act as a superconductor at a temperature above that of liquid…

A: Mass percent can be calculated using following formula.

Q: A mixture of BaO and CaO weighing 2.212 g is transformed into mixed sulfates (BaSO4 and CaSO4)…

A: Given data: Mass of the mixture of oxides = 2.212 g Mass of the mixture of sulfates = 5.023 g

Q: (a) If an automobile travels 225 mi with a gas mileage of 20.5mi/gal, how many kilograms of CO2 are…

A: (a) Volume of the gas can be calculated as: Since, 1 gal = 3785.41 mL Therefore, From the Density:

Q: 3.128 Heating 2.40 g of the oxide of metal X (molar mass ofX = 55.9 g/mol) in carbon monoxide (CO)…

A: The moles of X produced is, number of moles=given massmolar mass…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: (a) When methanol treated with oxygen and gives Carbon dioxide, then it is Combustion type of…

Q: 10. A 2.00g strip of Mg is reacted with oxygen inside a flash bulb by pressing the shutter. The…

A: Magnesium reacts with oxygen to form magnesium oxide. Reactants always react with each other in a…

Q: 1-KNO,(ag) + H,0(1)

A: The treatment of acid with base leads to the formation of salt and water. The special name of this…

Q: A 0.45-gg sample of aspirin is decomposed into its constituent elements and found to contain 0.27 g…

A: Given: Mass of the sample of Aspirin = 0.45 g Mass of C= 0.27 g Mass of H=0.020 g Mass of O=0.16 g…

Q: What mass of AgI can be produced from a 0.532 g sample that assays 20.1% of AlI3?

A: The mass of the sample is = 0.532 g The mass percent of AgI in the sample is = 20.1 % The mass of…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: Percent yield = (Practical yield/theoretical yield)×100

Q: What mass in grams of the magnetic oxide of iron (Fe3O4) can be made from 77.0 g of pure iron and an…

A:

Q: 3.130 A mixture of CuSO4 ⋅ 5H2O and MgSO4 ⋅ 7H2O isheated until all the water is lost. If 5.020 g of…

A: The reaction involved is as follows; CuSO4.5H2O+MgSO4.7H2O→CuSO4.MgSO4+H2O Molar Mass of CuSO4.5H2O…

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, 0, (molar mass…

A:

Q: Is each of the following statements true or false? Correctany that are false:(a) A mole of one…

A: Since we only answer up to 3 sub-parts, we’ll answer the first 3. Please resubmit the question and…

Q: See the attachment.  I want to make sure I am on the correct path.

A: Hey, since there are multiple sub-parts posted, we will answer first five question. If you want any…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: In a certain experiment, methanol is made to react with oxygen and carbon dioxide is obtained. For…

Q: Unknown Hydrate Mass of Empty Crucible + lid : 27.19g Mass of Crucible +lid and hydrate : 28.58g…

A: Hydrate is a compound or salt with water. The salt or compound without water is called anhydrous…

Q: A sample weighing 3.011 g is a mixture of Fe2O3 (molar mass = 159.69 g/mol) and Al2O3 (molar mass =…

A: ·Mass of the sample mixture of Fe2O3 and Al2O3 = 3.011 g·Mass of sample residue = 2.598 g·Molar mass…

Q: 30. The active ingredient in some antiperspirants is aluminum chlorohy- drate, Al₂(OH), Cl. Analysis…

A: Given - mass of sample of antiperspirant= 2.000g             mass of aluminum = 0.334 g

Q: empirical formula of bismuth chloride?

A:

Q: Disulfide dichloride (S,Cl,) is used in the vulcanization of rubber, a process that prevents this…

A:

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m³. In a certain…

A: The type of chemical reaction that occurs between methanol and oxygen is a combustion reaction in…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 ×102 kg/m3 . In a certain…

A: (a) Methanol combust with oxygen to give carbon dioxide and water. Hence it is a combustion…

Q: Nitrogen (N), phosphorus (P), and potassium (K) are themain nutrients in plant fertilizers. By…

A: It is given that N/P/K ratio needs to be calculated and we are provided by the N/P2O5/K2O, mass…

Q: Iron ore is impure, Fe2O3. When Fe2O3 is heated with an excess of carbon (coke), metallic iron and…

A: Mass of sample=938 gMass of Iron obtained=523 gmass % of Fe2O3=?

Q: (a) One molecule of the antibiotic penicillin G has a massof 5.342 * 10-21 g. What is the molar mass…

A: (a) Given information,     One molecule of the antibiotic penicillin G has a mass of 5.342 * 10-21…

Q: A sample weighing 3.056 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al, O, (molar mass…

A:

Q: A mixture of KClO₃ and KCl with a mass of 0.950 g was heated to produce O₂. After heating, the mass…

A: The balanced equation is as follows: 2KCIO3 (s) --> 2KCI(s) + 302 (g) The mass of the mixture (…

Q: 10 g of a concentrated HCl solution (density=1.17 g/mL, richness =397.5 g/L) were taken and diluted…

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Q: Lead(II) chromate (PbCrO₄) is used as the yellow pigmentin traffic lanes, but is banned from house…

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Q: What volume, in milliliters, of 3.0 M NAOH is needed to prepare 175 mL of 0.20 M NaOH by dilution…

A: Given the concentration of stock solution of NaOH =3.0 M volume of diluted solution =175…

Q: A sample of fuming sulfuric acid containing only SOs and sulfuric acid weighs 1.400 grams and…

A: Given: Mass of mixture = 1.400 g. Concentration of NaOH = 0.850 N = 0.850 M…

Q: GRAVIMETRIC DE TERMINA TION OF AN UNKNOWN SULFATE 1. In the procedure involving heating the BaSO4…

A: We know that, Mass percentage of sulfate = ( Mass of sulfate / Mass of sample ) ×100

Q: The principal component of mothballs is naphthalene, a compound with a molecular mass of about 130…

A: Record the given information,

Q: Write The Molecular Fotmula For The Following 1-Copper Sulfate 2-Phospours Pentabromide 3-Calicum…

A: Hello, since your question has multiple parts, we will solve the first question for you. If you want…

Q: Which of the following statement(s) is/are false? I) The process of determining the composition of…

A: By chemical analysis, we can detect various ions. By several chemical tests, we can determine which…

Q: Q1/ What is the weight, in milligrams, of 0.250 mmol Fe2O3 (ferric oxide),F.wt (159.7 mg/mmol)?

A:

Q: Write a balanced chemical equation for the reaction thatoccurs when (a) Mg(s) reacts with Cl2(g);…

A: Chemical reaction- It consists of reactant (starting material) and products (substances formed in…

Q: 3. What mass of KIO, is needed to convert the copper in 0.2750 g of CuSO, 5H,0 to Cu(IO,),?

A: First, write out the chemical equation. 2KIO3 +CuSO4.5H2O  ----> K2SO4 +5H2O+Cu(IO3)2

Q: A sample weighing 3.165 g is a mixture of Fe, O, (molar mass = 159.69 g/mol) and Al,O, (molar mass =…

A: In given problem, Al2O3 is not reacted with H2. Hence write reaction for Fe2O3 and H2. Fe2O3 (s) +…

Q: Methanol (CH3OH) is a liquid at room temperature with a density of 7.91 x102 kg/m. In a certain…

A: Calculation of mass of methanol: M=V×d=2.91 mL×7.91×102×0.001 g/mL=2.302 g a) The reaction taking…

Q: To help farmers and gardeners, commercial fertilizers have a big three-number "NPK" label on the bag…

A: Given data: The 100% mass of a fertilizer contains, Ammonium phosphate = 37% Urea = 40% Potassium…

Q: onsider the reaction of 30.0 mL of 244 M Bal, with 20.0 mL of 0.315 Na3PO4. Bal2(aq) + 2 NazPO4(aq)…

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Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".