A lead fishing weight contains 0.19 mol of lead atoms. What is its mass?

Q: Suppose the galvanic cell sketched below is powered by the following reaction: Mn(s) + Pb(NO3)₂(aq)…

A:

Q: Compare the solubility, in milligrams per milliliter, of silver iodide, Agl, in water that is 0.020M…

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Q: The Au concentration in the cathode compartment will be: 3.20×10-³ M b. 0.710 M a. Ecell = V

A: The nernst equation will be for the cell Ecell = E0cell - RTnFlog [Oxidation][Reduction] where Ecell…

Q: 22. Use VSEPR theory to predict the shape of b) PH3 a) SiH4 c) Cl₂O d) ammonium ion e) phosphate ion

A: we have to predict the shape of given species using VSEPR theory

Q: Consider the reaction H₂S(g) + 2H₂O(1) 3H₂(g) + SO₂(g) Using standard absolute entropies at 298K,…

A: Write the given reaction. H2S (g) + 2H2O (l) →3H2 (g) + SO2 (g)  The given number of moles of H2S is…

Q: Your local weather report announces that the barometric pressure is 30.16 inHg. Convert this…

A: Dimensional analysis is used to convert a physical quantity given in one type of unit to some other…

Q: Calculate (in kJ/mol) the standard Gibbs free energy change (AG°rxn) for the oxidation of sulfur…

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Q: Consider the following molecular interactions in the liquids (I) H2O --- H2O (II) HF --- HF (III)…

A: Boiling point is defined as the temperature at which a liquid starts boiling and becomes vapours.…

Q: Propose syntheses for the product shown on the left starting from the indicated compound (shown on…

A: The following process for the retro analysis for the provided target molecule.

Q: A galvanic cell is prepared with tin and silver electrodes in contact with 0.5 M of Sn(NO3)2 (aq)…

A: Anode (Oxidation): Sn → Sn2+ + 2e-  E°Sn2+/Sn = -0.13 V Cathode (reduction): Ag+ + e– → Ag  E°Ag+/Ag…

Q: Read the descriptions of physical or chemical changes in the table below. Then decide whether the…

A: A reaction is said to be spontaneous if change in Gibbs free energy is negative  ΔG = ΔH - T ΔS…

Q: Consider the reaction 3Fe2O3(s) + H₂(g) 2Fe3O4(s) + H₂O(g) for which AH = -6.000 kJ and AS°= 88.70…

A: 3 Fe2O3(s) + H2(g)→2 Fe3O4(s) + H2O (g) ∆H°=-6.000 kJ∆S°=88.70 J/KT = 298.15 K

Q: kinds of kinds Consider the second-order reaction: 2HI(g) H₂(g) +1₂(g) Use the simulation to find…

A:

Q: What are the hydrolysis products of the following reaction? 0 11 NHCCH3 Cl H₂O, NaOH heat 0…

A: Amides undergo basic hydrolysis in the presence of NaOH, H2O to give amine and salt of Carboxylic…

Q: 9.Propylene has a molar mass of 42.08 and contains 14.3% H, 85.7% C. what is its molecular mass?

A: Molar mass = 42.08 g/mol % H = 14.3 % % C = 85.7 % Molecular mass = ?

Q: Examine the following equilibrium: MgO (s) + CO₂ (g) = MgCO3 (s) The correct formula for the…

A: Keq is the ratio of the equilibrium concentrations of product over equilibrium concentrations of…

Q: ) Beginning with isopropylbenzene, propose an efficient multi-step synthesis of ne aromatic…

A: The desired product can be formed by following four reaction steps,  these are 1. Nitration  2.…

Q: @ Try Again Your answer is incorrect. Use the observations about each chemical reaction in the table…

A: The relationship between  ΔH  and ΔS is given by, ΔG = ΔH - TΔS If the value of   ΔG is negative…

Q: Give the set of four quantum numbers that could represent the electron lost to form the Rb ION from…

A: Quantum numbers a) Principal quantum number:  Determine the orbital size and an energy level  an…

Q: Please answer question #9

A: We know sp2 hybridization is associated with one s and two p orbitals resulting in three bonds. In…

Q: 1. Balance the following redox equations using the half-reaction method: a. N₂H4 + KBrO3 → N₂ + KBr…

A:

Q: (a) Give the formal oxidation number and the d-electron count of the transition element and the…

A: Oxidation state of the compound is determined based on the formal charge of bonded atoms.

Q: At 900 K, the following reaction has Kp = 0.345: 2 SO2(g) + O2(g) ⇋ 2 SO3(g). In an equilibrium…

A: Equilibrium constant Kp for a reaction is defined as the product of the partial pressure  of the…

Q: Give the set of four quantum numbers that could represent the electron lost to form the Rb ION from…

A:

Q: How many moles of HCl are present in 25.00mL of 0.100M HCl?

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Q: How many stereo-isomers would reasonably expect to form from the electrophilic addition of 2…

A: The given reaction is a simple addition reaction of HBr to alkenes to give final product. And, the…

Q: When 1.50 mol CO2 and 1.50 mol H2 are placed in a 3.00-L container at 395 °C, the following reaction…

A: CO2(g) + H2(g) ⇋ CO(g) + H2O(g) Initially moles of CO2 = 1.50 mol moles of H2 = 1.50 mol Volume of…

Q: 13. How many total atoms are represented in each formula? b) KAl(SO4)2 C) Fe(C₂H3O2)3 a) CH3CH₂OH…

A:

Q: Wait, so if the formula is correct, therefore changing the volume of vinegar to 25 mL would also…

A: Given Molarity of NaOH = 1M  Volume of vinegar solution = 25 mL  Volume of distilled water = 20 mL…

Q: , then you can help me on question 1.

A: Molarity of KMnO4 solution is 0.1M. Trial-1:  Initial burette level = 0.45 mL Final burette level=…

Q: Identify key peaks in the IR spectra (cycloadduct)

A: A question based on IR spectroscopy. An IR spectrum of a cycloadduct is given that is to be…

Q: Anhydride means "without water". Suppose 1M H2SO4 were substituted for the concentrated H2SO4. Would…

A: When synthesizing acetylsalicylic acid (aspirin), concentrated sulfuric acid is commonly used as a…

Q: Draw a three-D structure for the following: a) C2H4 b)C2H2

A: We have find out the 3D structure

Q: What is the ionization constant at 25°C for the weak acid CH3NH3*, the conjugate acid of the weak…

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Q: Image 32 A) C) (1) LDA (2) CH3CH-0 ОН H3O+ B) OH ОН, О D) я - де ОН

A: Carbonyl compounds in the presence of a strong base like LDA form enolate ions which can attack at…

Q: Decide whether each chemical reaction in the table below is an oxidation-reduction ("redox")…

A: A reaction in which oxidation & reduction occurs simultaneously are called Redox reaction.…

Q: Which of the compounds shown in Image 9, on reaction with aqueous sodium hydroxide, yields sodium…

A: Reagent used is sodium hydroxide. It is a strong base as well as nucleophile. Proton of carboxylic…

Q: H₂C H₂C C=O acetone H H N-N H H hydrazine - H₂O H₂C H H₂C H hydrazone of acetone C=N-N

A: The above reaction is hydrazone formation. In the reaction Hydrazine will add to a carbonyl compound…

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Formula weight is the sum of the atomic weights of all atoms appearing in a given chemical formula.

Q: When studying the following reaction,      A     +     B    +     C          D     +     E it is…

A: Suppose the rate law for the reaction is Rate =k[A]m[B]n[C]p m is the order of A n is the order of B…

Q: can you please also solve part b and c of this question

A: The given problem is a simple conversion of acetaldehyde to methane and carbon-monoxide. Here, our…

Q: Use the observations about each chemical reaction in the table below to decide the sign (positive or…

A: The sign of enthalpy change for an endothermic reaction is positive and that for an exothermic…

Q: 5. The volume of a gas is 1 liter at 45.0°C, if the temperature is decreased to 7.0°C without…

A: Initially, Volume (V1) = 1 L Temperature (T1) = 45.0°C = (45.0 + 273.15) K = 318.15 K Later, Volume…

Q: In a system at equilibrium, the equilibrium position occurs far to the right. This means that once…

A: Equilibrium is a state in which rate of forward reaction and backward reaction is the same so that…

Q: The pH of a solution is 3.68. What is the OH⁻ concentration in the solution?

A: The pH of a solution is 3.68. We have to calculate the OH- concentration in the solution.

Q: 23. What is the volume in liters, of occupied by 64.0 g O₂ gas at STP? 2

A:

Q: Suppose 2.22 g of barium acetate is dissolved in 200. mL of a 57.0 m M aqueous solution of sodium…

A: Mass of barium acetate = 2.22 g

Q: 11. Consider the VSEPR structure shown to the right. What is the molecular geometry depicted? And…

A: 11) Valence shell electron pair repulsion theory (VSEPR theory) is used to predict the geometry of…

Q: 4. The [a] of pure quinine, an antimalarial drug, is -165⁰. a) Calculate the enantiomeric excess…

A: we have to determine  enantiomeric excess percentage of enantiomers  optical rotation for the…

Q: Decide which intermolecular forces act between the molecules of each compound in the table below.…

A: 1) Silane (SiH4) is non - polar and thus don't have dipole - dipole forces. It is heavier, thus it…

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.