e-Mole Calculations In the reaction of iron and sulfur, how many moles of sulfur are needed to react with 9.0 moles of iron? 2Fe (s) + 3S (s) → Fe,S, (s)

Q: Please answer no. 1 and 2 in the attached image. Note: For No. 1, Sample problem 12 is also attached...

A: Unstable nuclie undergoes spontaneous nuclear decay  reactions . The energy released in the formatio...

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Q: ENRICHMENT Complete the concept map below by filling up the boxes with the appropriate concepts usin...

A: A scientist named Mendeleev arranged the different chemical elements present in this world according...

Q: Which quantum designations describes a spherical orbital?

A: n signifies the principle quantum number  l signifies the azimuthal quantum number  for specific n v...

Q: 3. What mass of NaCl can be produced from 0.55 mol Cl2 in the following reaction? 2 Naa + Cle) → 2 N...

A: Formula Used: Mass of compound = no. of moles × molecular weight of compound   Given : No. of moles ...

Q: The Major Classes of Chemical Reactio PROBLEMS 1) Write the complete ionic equation and the net ioni...

A: Complete Molecular equation is that Reaction equation in which Reactants and Products are Present in...

Q: 31. is the money left after all costs and expenses of a business are paid.

A: Net profit is the amount of money left over after paying all of the business expenses. This net prof...

Q: Each of the following compounds, state whether it is ionic or covalent. If it is ionic, write the sy...

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Q: Please answer D and E

A: pH + pOH = 14  pOH = -log[OH-] 

Q: Complete the following table: Compound Ion Formula Ion Formula Formula Fe?+ Fel, I NH,+ CI- Ni?+ Br

A: Since you have posted multiple unrelated questions, we are entitled to answer the first only.  

Q: The ionization energies for removing successive electrons from sodium are 496 kJ/mol,

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Q: A solution of 1.8274g of a polypeptide in 274mL of a aqueous solution has an osmetic pressure at 31....

A: Osmotic pressure  defined  as the minimum  pressure that  must be  applied  to solution  to stop  th...

Q: Hello, can someone please help me with these chem questions and give me a clear step-by-step solutio...

A: a) Calculation of no. of mol of NaOH: n=Molarity×Volume=0.100 mol/L×10.00×10-3 L=1×10-3 mol Calculat...

Q: Need the answer as soon as possible please

A: Given, Volume of HCl =70 mL concentration of HCl=0.25 M Concentration of NaOH =0.1 M Initial burette...

Q: Chemistry Question

A: Identify  the Ionic and covalent  

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A: Wave transmission happens as waves travel through a given point or medium. Sound waves are transmitt...

Q: Which of the following is not identified as a strong base?

A: The strong base is

Q: a) Define the term average bond enthalpy. b) Determine a value for the hydrogenation of propene. Th...

A: Hydrogenation of propene which means enthalpy of hydrogenation of propene. This is calculated using ...

Q: Write the basic equilibrium equation for BrO₃⁻ (CH₃)₂NH. and the write the acidic equilibrium equati...

A: In reaction acids donates the proton and base accepts the proton .

Q: The first step in the industrial manufacture of nitric acid is the oxidation of ammonia: 4NH32 + 502...

A: Given chemical reaction, 4 NH3 (g) + 5 O2 (g) → 4 NO (g) + 6 H2O  Mass of oxygen, O2 = 0.765 g  Mola...

Q: The discovery that uranium emitted invisible rays was made accidentally. O True O False

A: The answer is given as follows Uranium was discovered in 1789 by Martin Klaproth, a German chemist, ...

Q: For the reaction sequence shown below identify the products A and B. SMe2 • (AUCI(SMe,) Cu

A: N-heterocyclic carbenes are the inorganic compounds which is cyclic in nature. N-heterocyclic carben...

Q: Please answer iii

A: III) Teсhnetium-99  Definitiоn:Teсhnetium-99  is  defined  аs  аn  isоtорe  оf  teсhnetium  with  а ...

Q: What would be the pH of a solution with 0.500-grams of HCI dissolved in 0.125 L of water?

A: [H+] = mass of HCl / [ molar mass of HCl • volume of HCl Solution ]  [H+] = 0.500g / ( 36.46gmol-1 •...

Q: A 4.720 g sample of a compound of carbon, hydrogen and silver was burned in an atmosphere of oxygen....

A: Given : The compound contains only carbon, C, hydrogen, H and silver Ag. Mass of CO2 produced on com...

Q: In a certain place, the typical atmospheric pressure is 69.328 kPa. What is the boiling point of wat...

A: The gas pressure is the pressure that is exerted by the gaseous particles on the wall of container. ...

Q: Write the four quantum numbers of the 9th electron of Sodium filled according to Aufbau’s Principle.

A: Four quantum number are as follows:-  Principle quantum no. (n)  Azimuthal quantum no. (l)  Magneti...

Q: Elements whose highest energy electron is placed to complete an S shell are O Halogens O Noble Gases...

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Q: Liquid methane (CH4). and liquid oxygen (02) are used in some rocket engines. What is the mass of ca...

A: Given  Mass of CH4   = 500000 gram Mass of O2    = 150000 gram  Mass of CO2  = ?

Q: Q.4: Find the fraction of the body centered cubic unit cell volume filled with hard spheres as shown...

A: Given total volume = 343 cm3 we know            volume =43×π × r3          343 cm3 =43×3.14 × r3    ...

Q: A 10.0 mL dose of the antacid contains 830mg of magnesium hydroxide. What volume of0.10 M stomach ac...

A: Given  Volume = 10 mL  mass of Mg(OH)2 = 830 mg  1 mg = 10-3 gram  830 mg = 0.830 gram  Molarity of ...

Q: All of the following are representations :of 2-methylpentane,EXCEPT H. H. CH2CH3 H3C CH3 H. H `CH3

A: To tell the representation of compound in newmann representation. You just need to do numbering in s...

Q: 10 moles of A reacts with 20 moles of B via the reaction A+B C+D The conversion of the limiting reac...

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Q: The table below lists some properties of a sample of sodim hydroxide. Which of these is a property t...

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Q: Based on the following data, determine the molecular weight of the unknown solute.  Note the "initia...

A: Since your question has multiple sub-parts, we will answer the first three sub-parts for you. If you...

Q: 20 ml of 0.1 N Ammonia diluted to 60 ml with water. (kb = 1.8 x 10-5) pH = pKw –;pKb +logC What is t...

A: First calculate the pKb using below the relation and substitute Kb is 1.8×10-6 pKb=-log(Kb)=-log(1.8...

Q: What pressure is required to contain 0.023 moles of nitrogen gas in a 4.2 L container at a        t...

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Q: Chemistry Question

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Q: The Major Classes of Chemical Reactions 55 4) Identify the following as strong, weak, or non-electro...

A: Please be noted that the structure of (b) is Ni(NO3)2 but not Ni(NO2)2 Electrolytes are substances t...

Q: 1

A: The balanced chemical reaction is- C3H8 (g)   +  5O2 (g) →  3CO2(g)   +   4O2 There are supposed to ...

Q: OH CH2

A: The reaction taking place is given as,  

Q: Which of the following chemical reactions will produce a precipitate?

A: 2nd  chemical reactions will produce a magnesium carbonate(MgCO3 ) precipitate.  Potassium carbonate...

Q: Q/ calculate of the molar mass (Al2(OH)3 „Al=26.98, O=16,H=1 *

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Q: Use table to determine the volume occupied by 25.139 g of water at 27.0°C. (Please box answer and s...

A: Since we known this formula  Density = mass / volume  Also, Volume = mass / density 

Q: When Co +2 combines with nitrite formula is

A: Chemical formula can be formed by criss-crossing the valencies of ions.

Q: Chemistry Question

A: Chemical formula of compound can be formed by criss-crossing the valency of ions.

Q: answer b part.

A: COCl2→CO + Cl2 Keq = 8.56×10-2M=nCOCl2Vl0.147 =n16.6=nCOCl2=2.4402 Similarly 0.112=n16.6=nCO=1.85920...

Q: Assuming that strontium nitrate, Sr(NO3)2, forms an ideal solution in water, the van’t Hoff factor (...

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Q: Which particle will have a charge of 1+?

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