Write the electron configuration of an atom of the element highlighted in this outline of the Periodic Tab 1234 0 5 6 7 Hint: you do not need to know the name or symbol of the highlighted element! X He Ne Ar Kr Xe Rn

Q: When you perform a certain reaction, 5.780 g of product is made. If you calculate a percent yield of…

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Q: Which of the following statements is(are) true about gases? When the gas produced from the…

A: BTB solution : It is a pH indicator , it has pH range of 6-7.5

Q: Consider the equilibrium reaction,   MX2(s) ⇌ M2+(aq) + 2X-(aq)   Which of the following is TRUE…

A: The equilibrium between the soluble ions and insoluble salt can be described by the solubility…

Q: A freshly isolated sample of 90Y was found to have an activity of 2.4 x 105 disintegrations per…

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Q: Calculate either [H3O+] o or [OH-] for each of the solutions at 25 °C. Solution A: [OH-] = 2.63 x…

A: A solution is acidic if it's pH is less than 7 and it is basic when it's pH is more than 7 , at 7 it…

Q: Use the thermodynamic data below to compute the average bond enthalpy of the metal-ligand bonds in…

A: The concept used here is from. Thermodynamics of physical chemistry.  Here we have to find average…

Q: If 316.0 mg of AgBr is completely dissolved in 144.0 mL of 0.12 M NH3, what is the equilibrium…

A: Answer:- Firstly an equilibrium equation is written then using the value and expression of…

Q: Identify which of the following species are strong acids, strong bases, weak acids, weak bases, or…

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Q: 45. Complete the table. Mass Solute 15.5 g 22.8 g Mass Solvent 238.1 g 183.3 g 215 Mass Solution…

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Q: For a particular reaction at 225.9 °C, Δ?=−1076.67 kJ/mol , and Δ?=785.08 J/(mol⋅K) . Calculate ΔG…

A: T = 225.9 °C = 498.9 K ΔG = -1076.67 kJ/mol ΔS = 785.08 J/(mol⋅K) = 0.78508 kJ/(mol⋅K) ΔG at -22.8…

Q: Which half-reaction occurs at the negative electrode (cathode) if the cell is used for silver…

A: Silver plating is a process in which layer of silver metal is deposited on other metals.

Q: A 20.00 mL sample of vinegar was titrated with 1.00 M NaOH. If it took 15.00 mL of NaOH to reach the…

A: The volume of the vinegar sample = 20 ml The volume of the NaOH = 15.00 ml The concentration of NaOH…

Q: Arrange from top to bottom in order of increasing boiling point.Top= lowest boiling point, bottom…

A: We have to arrange the boiling point of the given compounds from top (lowest) to bottom (highest).…

Q: Write the balanced equation for the neutralization reaction between H₂PO4 and NaOH in an aqueous…

A: A balanced reaction is the reaction in which number of atoms are same on both reactant as well as…

Q: From the following data at 25°C, H2(g) + Cl2(g) → 2HCl(g) 2H2(g) + O2(g) → 2H2O(g) AHO=-185 kJ…

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Q: Consider a separation performed on a 50.0 mm long open tubular column with a 0.50 mm diameter and a…

A: Given , Length of column = 50.0 mmcolumn diameter, d= 0.5 mmthickness =2.0 μmCompound A eluted at…

Q: I dont understand. Could you rewrite better? I think its wrong.

A: The standard free energy change is given by: ∆G=-RTlnK

Q: 9. Determine the transition which mainly occurred in IR analysis. A. Electronic transition only B.…

A: Infrared (IR) spectroscopy is one of the most common and widely used spectroscopic techniques…

Q: Predict the product for the reaction shown. OD) IV OA) I OB) II 1. Hg(OAc)₂, H₂O 2. NaBH4 OC) III…

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Q: The formation constant of a complex ion [M(NH3)4]2+(aq) is 8.8E8. If a solution is prepared by…

A: Answer:- Firstly a balanced equilibrium equation is written then using the expression of equilibrium…

Q: Rhodium is a bright, hard, and highly reflective metal. It is most commonly used to plate white gold…

A: To find out the oxidation state, first find out the moles of e- and the moles of the rhodium. Then…

Q: What is the likely product of the reaction shown? & OD) IV O None of these B) II H3O+ DAL OH OH you…

A: In the given reaction, acidic hydrolysis of epoxide occur to give di hydroxy product.

Q: Which of the following is the conjugate base of the substance, HCr2O7-? Cr2O72- H2Cr2O7 Cr2O7

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Q: Fill in the blanks to summarize the relationship among the gas properties in Boyle's experiment: For…

A: According to Boyle's experiment:  For a fixed number of moles of gas at a constant temperature,…

Q: Which of the indicators (i.e. litmus paper, universal indicator paper and/or pH meter) could NOT be…

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Q: 25. Experiment Trial 1 2 [x] (Molarity) 0.1 0.2 [Y] (Molarity) 0.3 0.6 Rate (M/min) 4.0 x 10-4 1.6 x…

A: Rate law = k [X]a[Y]b Order of reaction (n) = a + b

Q: Propose a reasonable mechanism for this reaction. ax Br water/ethanol heat + HBr

A: We have been given a chemical reaction and asked to propose a reasonable mechanism for the same.

Q: the electrolysis of molten alcl3 for 1.00 gr with an electronical current of 12.0 A produce _____ g…

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Q: Determine the mass of Cu0(s) required to react with 34.9 mL of 2.2 M FeCl3(aq). Use the equation…

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Q: Which of the following Cl₂ +2e-2CI- Mg²+ + 2e- → Mg 2H+ + 2e- → H₂ Cl₂ H₂ Mg is the best reducing…

A: Greater the value of standard reduction potential of a redox couple , stronger be the oxidizing…

Q: 17)Calculate the equilibrium constant, K, for the following reaction and concentrations. 2 NOCI (g)…

A: Equilibrium constant of a reaction written as , K = (Concentration of product)n(Concentration of…

Q: 8. How much mass is released as energy in the explosion of a 4.6 megaton bomb? Include at least 3…

A: The concept used here is from basic chemistry.  Here it is important to note that we have to find…

Q: Which of the following arrangements of these salts is in order of increasing solubility in water?…

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Q: ft C W 7 A student proposes the following Lewis structure for the nitrite Cosoft 0—Ñ=0] Assign a…

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Q: Increasing the temperature of an exothermic reaction increases the Keq value. True False

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Q: The conjugate base of HSO 4 - is     SO 4 2-.     HSO 4.     H 2SO 4.     H 2SO 4 -.

A: According to Bronsted and Lowry concept an Acid is a substance that has the tendency to donate a…

Q: Question 35 What is the correct Lewis structure for nitric acid, HNO,, including the format charges?…

A: Formal charge on an atom is calculated with help of valence electron,nonbonded electron and bonded…

Q: 7. Which of the following acids is strongest, based on the values of their acid ionization…

A: We have been asked two questions. In one question, we have been asked to choose strongest acid on…

Q: It says the solution is incorrect

A: Given that, for carbon-11 The half-life is t1/2 = 20.3 min. The initial amount is N0 = 1×107 atoms.…

Q: Write a resonant structure for the molecule of dicyanamide. All atoms should satisfy their stability…

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Q: An increase in the temperature of a solution usually     increases the boiling point.…

A: Solubility is defined as the maximum concentration of solute that can be dissolved in a certain…

Q: A student proposes the following Lewis structure for the ozone : 0 :0-0-0 (03) molecule. Assign a…

A: Given : structure of ozone

Q: the Ph of a water is 6, what is the OH- concentration?

A: POH is equal to negative logarithmic of hydroxide ion concentration

Q: Example: 5.67 x 10² kJ of heat was needed to completely melt a 0.590 kg sample of aluminum…

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Q: In the following reaction, identify which is the Lewis acid and which the Lewis base. Give your…

A: We have been given a reaction and we have been asked to identify Lewis acid and lewis base. We have…

Q: Consider the equilibrium reaction, M3X(s) ⇌ 3M+(aq) + X3-(aq) What is the molar solubility (s) of…

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Q: 111 O Calculating the mass of an electrolysis product from the applied... Correct Electroplating is…

A: Current= Charge/Time  Charge = Current x Time  1 F = 96500 C/mol

Q: Write a balanced chemical equation for the overall cell reaction represented as below and draw the…

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Q: When a smoldering toothpick was inserted to a tube containing a gas, the toothpick flared or…

A: O2

Q: A piece of zinc rod was placed in aqueous silver nitrate. Which of the following ionic equations…

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