How many moles of Fe2O3 are produced by 16.0 g of O2?

Q: A sample of air has a volume of 3.50 L at 1.00 atm. What is the volume of this air sample if the…

A: Given -->  V1 = 3.50 L  P1 = 1.00 atm  P2 = 86.04 atm  V2 = ? L  T1 and T2 = constant

Q: Phosphoric acid, H₂PO4 (aq), is a triprotic acid, meaning that one molecule of the acid has three…

A: H3PO4 is a tribasic acid. So it can liberates 3 moles of H+. According to question PKa1=2.16…

Q: How many grams of 4 Al(s) + 3 0₂(g) → 2 Al₂O3(s) Step 1: Show the strategy for solving this problem.…

A: Aluminum reacts with oxygen to form aluminum oxide. The equation for the balanced chemical reaction…

Q: In the laboratory, a general chemistry student measured the pH of a 0.589 M aqueous solution of…

A: Given,  Concentration of weak acid, phenol = C = 0.589 M  pH of phenol = 4.997  What is acid…

Q: 35. Calculate the equilibrium constant at 25 °C using standard cell potential data, Sn(s) + CuSO4…

A:

Q: Curved arrows are used to illustrate the flow of electrons. Follow the curved arrows and draw the…

A: -> SN2 reaction proceeds in one step if reaction takes place at chiral center then  inversion in…

Q: In the laboratory, a general chemistry student measured the pH of a 0.590 M aqueous solution of…

A: Given data :  Concentration of hypochlorus acid = 0.590 M  pH of solution = 3.829  To determine the…

Q: Create a concept map with "the octet rule" at the center using as many of terms listed below as…

A:

Q: Modify the predrawn structure of Tamoxifen to form the amine hydrochloride salt. Be sure to include…

A: The structure of Tamoxifen is:

Q: The half-life of a radioactive material is 42.99 minutes. Starting with 875.5 grams of the sample,…

A:

Q: Which of the following gives the correct numbers of protons, neutrons, and electrons in a neutral…

A: Answer - 50 protons, 68 neutrons, 50 electrons    Atomic number of Sn = 50 Mass number of Sn = 118…

Q: [Review Topics] [References] Calculate the [OH] of each of the following solutions at 25°C. Identify…

A:

Q: An unknown was treated with six drops of HCI. A precipitate was observed. Which of the following…

A: This is cation analysis problem. We are adding reagents to precipitate out cations. Hydrochloric…

Q: Chloroform, CHCL3, is a common solvent in organic chemistry. A solution is prepared by dissolving…

A: we have to calculate  molality of solution  boiling point of solution

Q: HI can react to form hydrogen and iodine as shown in the reaction below. When this occurs a small…

A: The balanced chemical equation is: 2HI(g) → H2(g) + I2(g)  Number of gaseous moles on the reactant…

Q: A balloon contains 0.76 mol N2, 0.18 mol O2, 0.031 mol He and 0.026 mol H2 at 739 mm Hg. What is the…

A:

Q: Combustion reactions are exothermic. The heat of reaction for the combustion of cyclobutane, C4H8,…

A: Butane reacts with oxygen to form carbon dioxide and water. The equation for the balanced…

Q: Draw the major product of this elimination. Consider regiochemistry and stereochemistry. Ignore…

A:

Q: 95. Which of the followings about Fe in heme is not correct a) The oxidation of ferrous ion (2+) to…

A: Four heme groups make up the tetramer structure of haemoglobin. One oxygen molecule can be carried…

Q: uestion 21 of 23 34.6 g Al x grams of Al2O3: > 26.98 g Al 1 mole 0₂ Answer Bank 1 mole Al 1 mole…

A: Aluminium reacts with oxygen to give aluminium oxide. A balanced chemical equation contain equal…

Q: Smallest 1A Largest H2A Li Be Na Mg 3B 4B 5B 6B 7888 K Ca Sc Ti V Cr Mn Fe Co Ni Cu Zn Rb Sr Y Zr Nb…

A: Atomic radius - It is the distance between nuclei of an atom to it's outer most shell electron

Q: H₂ H₂ H H₂ H₂ H₂C -C-C CH3 -C CH₂ pr CH3 CH3 A) 5-methylnonane B) isodecane C) 2,2-dibutylethane D)…

A: hydrocarbon having all single bond is called alkane. while giving IUPAC name to alkane use suffix as…

Q: Determine the pH if 50.0 mL of 0.50 M HI solution is added to 0.027 L of a 0.10 M KOH solution

A: Given : 50.0 mL of 0.50 M HI solution is added to 0.027 L of a 0.10 M KOH solution  Tip : pH = -log…

Q: If you have 400.0  mL of a 25.2 %(w/w) HCl solution, determine the concentration of the solution in…

A: ppm = mass of solute present in part per million of solution  ppm = mass of solute × 10⁶/mass of…

Q: Show that the standard heat of the following reaction is equal to -905 kJ/mol at 25 oC. 4 NH3(g) +…

A:

Q: The key to understanding atmospheric structure lies in in­teractions between atmospheric gases and…

A: The energy or frequency of electromagnetic radiations in increasing order is: Radio waves < micro…

Q: What is the boiling point elevation constant Kb​, for water? b) What is the molality of the NaCl…

A:

Q: 3 g of HA acid is dissolved in water to produce a 1 dm³ solution. If the change of acid…

A: Given, mass of acid, HA = 3 g  Volume in dm3 = 1 dm3  Percent ionization = 2%  Relative molecular…

Q: When titrating 225 mL of 0.245 mol/L nitric acid HNO3 with 0.205 mol/L KOH. What is the pH of the…

A:

Q: Br 4. Label each molecule as optically active or not optically active and why. HN S a S CH3 H CH3 HO…

A: Answer: To be optically active compound, at least one carbon should have all four different group…

Q: Sulfur dioxide and oxygen react to form sulfur trioxide during one of the key steps in sulfuric acid…

A:

Q: O Macmillan Learning Quantum numbers arise naturally from the mathematics used to describe the…

A: The correct set of quantum number is that which satisfies all the conditon of quantum number which…

Q: Select all of the correct statements about reaction rates from the choices below. The lower the…

A: The Answer to the following question is- 1.correct 2. correct 3. correct 4. false 5. correct 6.…

Q: would the molecular orbitals of cyclopenta-1,3-diene, the carbocation, carbanion, and the radical…

A:

Q: How many liters of oxygen are needed to exactly react with 19.8 g of methane at STP? CH4(g) + 2…

A:

Q: Draw the product of the E2 reaction shown below. Ignore any inorganic byproducts.

A: Elimination reaction of alkyl halide: Alkyl halide gives an elimination reaction by reacting with a…

Q: What quantity of heat (in kJ) is evolved when 25.0 g H2O(g) at 125.0 °C is converted to H2O(l) at…

A: we have to calculate the heat evolved when 25.0 g H2O(g) at 125.0 °C is converted to H2O(l) at 35.0…

Q: Draw the Lewis Structure for the following ion: K+1 Be sure to use brackets and positive or negative…

A: Leiws structure are drawn by writing the symbol of the element or the ion. Then number of valance…

Q: Macmillan Learning Essentials of General, Organic, and Biochemistry Denise Guinn THIRD EDITION Use…

A: Given that, the table of the calorie content Type of biomolecule Representative foods Calorie…

Q: Determine the equilibrium constant for the following reaction: Ni(OH)2(s) + 2H3BO3(aq) → Ni2+ +…

A: Concept based on equilibrium constant for the sum of two or more chemical reactions. The equilibrium…

Q: *What are the products of saponification (hydrolysis with NaOH the catalyst) of…

A:

Q: b) û d) 2) NаBH4 1)BH3 THF 2)H₂O₂, NaOH OSO4 Hos 1) 2) H₂O* 20-0-H

A:

Q: 0.369 g of a sample containing barium chloride dihydrate was completely dissolved in a total volume…

A:

Q: Which type of electromagnetic radiation has the highest energy? Microwaves Ultra violet Radio waves…

A: Electromagnetic radiation have both electric and magnetic field which are perpendicular to each…

Q: In the laboratory, a general chemistry student measured the pH of a 0.590 M aqueous solution of…

A: we have to calculate the value of Kb for methylamine

Q: 4.0 H₂C I 3.0 11 H₂ CH3 I CH CH3 III IV 2.0 ppm 1.0

A: The number of peaks in the proton NMR spectrum corresponds to the number of distinct protons in the…

Q: Explain and indicate the acidic, basic or neutral character resulting from the aqueous solutions of…

A:

Q: VII. Please write a mechanism (showing all elementary steps) to rationalize the acid- catalyzed…

A: The given reaction is proceed by the formation of a carbocation. In first step , a secondary…

Q: 2- Calculate , max of the following compound N(CH₂)₂ Br 3- Calculate λ max of the following compound

A:

Q: (J). H H H ZHNGTD + ४

A: This is reaction of ketone with amine.

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.