Consider the following decay serles: a b b 214 d 218 214 214 210 Pb Po Pb 82 84 83 Which type of nuclear process occurs in steps c and d. respectively? Multple Cholice bemission, positron emission bemission, a emission positron emission, b emission aemission, b emission aemission, a emission

Q: In mining, roasting is the oxidation of metal sulfides to produce metal oxides and sulfur dioxide, a…

A: Given :-  2ZnS + 3O2 → 2ZnO + 2SO2  Mass of ZnS = 100.0 g  Mass of O2 = 70.0 g  To calculate :-…

Q: Consider the combustion of compressed methane, and liquid hydrogen. Which one will release more…

A: The enthalpy change for combustion of methane is -890.8 kJ/mol while the enthalpy change for the…

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A: At anode , oxidation takes place and at cathode reduction takes place.

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A: The Y-axis of the graph represents the percent recovery of the impurity, and the X-axis of the graph…

Q: Meo OMe NMe

A: We have to carry out the given transformation.

Q: .A 0.5537 g sample containing oxalic acid, H2C2O4 (MM = 90.03 g/mol) required 21.62 mL of 0.09377 M…

A: Given-> Weight of sample = 0.5537 gm Volume of NaOH = 21.62 ml = 0.02162 L Molarity of NaOH =…

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A:

Q: Zn and Sn ions coprecipitate when they exist in solution to form mixed oxides. Suggest a…

A: a. Given that, Zn and Sn ions coprecipitate when they exist in a solution to form mixed oxide. We…

Q: A chemist prepares a solution of aluminum chloride (AICI,) by measuring out 33.5 g of aluminum…

A: Given: Mass of AlCl3 taken = 33.5 g. And volume of solution = 350 mL = 0.350 L…

Q: 1) NaOEt Me OEt 2) H30* Could you show the mechanism please, also how do you know which alpha…

A: Given : We have to write the product for the given reaction.

Q: In a two-vessel technique titration set-up, what is the unknown substance if the volume of…

A: Given  A titration method is given we have to find out the unknown substance .

Q: Serine esterase contains a catalytic triad at its active site. Which amino acid in serine esterase…

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Q: Br/CH3COOH OCH3 16

A:

Q: .To find the concentration of an acid solution, pure sodium carbonate can be used as a standard. In…

A: Given: Mass of sodium carbonate i.e. Na2CO3 used = 2.15 g. And the volume of HCl solution used =…

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A:

Q: Solar energy is: O the energy stored within the structural units of chemical substances. O the…

A: To define: Solar energy.

Q: Ponatinib HCI, an antitumor drug: H F

A: The hybridisation of the following atoms in the molecule is: i) one of the fluorine atom - sp3

Q: A chemistry student weighs out 0.0690 g of hypobromous acid (HBrO) into a 250. mL volumetric flask…

A: Given: Mass of HBrO = 0.0690 g. And concentration of NaOH = 0.1700 M

Q: Using the prepared 10X TBE, calculate the volume of stock solution and double distilled water needed…

A: Dissolve the Tris base and boric acid in the EDTA solution. Adjust the pH of the solution to 8.3…

Q: For the reaction PCI3(9) + Cl2(g) = PCI5(g) at a particular temperature, Ke = 24.3. Suppose a system…

A: Given :  PCl3(g) + Cl2(g) <-----> PCl5(g)  [PCl5] = 0.60 M [PCl3] = 0.10 M [Cl2] = 0.15 M  Kc…

Q: Which of the following aqueous solutions are good buffer systems? 0 0.33 M ammonia + 0.39 M sodium…

A: Since we know that, Weak acid/ weak base with its conjugate base/ conjugate acid makes a good buffer…

Q: Question 3 Green Chemsitry: Select among the possible answers the corect answer for each of these…

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Q: 3. How many grams are in 2.25 moles of each of the following? a. N2 b. NaBr c. C6H14 d. H2O

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Q: Methane and water react to form carbon monoxide and hydrogen, like this: CH,(0)+ H,O(9) - CO(g)+…

A: CO = 71  mmol H2 = 213 mmol

Q: Consider the following chemical reaction at equilibrium Co(g)+ H2O (g) co2(g)+H2(g)Of H2 is removed…

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Q: Fill In Missing reagents and products in the cmpty boxes. Br. HOOH NH2

A:

Q: A The equation for the formation of nitrogen monoxide is N2(g) + O2(g) + 90.2 kJ → 2NO (g) a Is the…

A: Exothermic reaction :-  A reaction in which heat is released is known as exothermic reaction For…

Q: When the following reaction is at equilbrlum, which of these relationships is always true? 203lg) -…

A: Equlibrium constant Kc = Concentration of products / concentration of starting materials.

Q: Br,/CH3COOH ÓCH3 16 H,CH2COOCC COOCH2CH3 H2C excess NaOCH,CH; CH;CH,OH 17

A:

Q: The heat of combustion of acetylene, C2H2(g), at 25oC is -1299kJ/mol. At this temperature, ^Hof…

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Q: *Given the following information, answer the questions 6 and 7 Acid pKa Acid NH3 HC=CH pKa CH:CH:OH…

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Q: The activation energy for the following first-order reaction is 102 kJ/mol. N205(G) – 2NO2(9) +…

A:

Q: The decomposition of antimony pentachloride (SbCl5) is described by the following equation:…

A: 1. Given :-  SbCl5(g) ⇔ SbCl3(g) + Cl2(g)  [SbCl5] = 3.557  M [SbCl3] = 1.181  M  [Cl2] = 4.189 M…

Q: How does hydronium ion concentation relate to electrode potential in potentiometry? a. As…

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Q: Write a balanced half-reaction describing the oxidation of aqueous vanadium(I) cations to aqueous…

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Q: Does the pH increase, decrease, or remain the same when each of the following is added? EXPLAIN:…

A: pH = -log[H+]  So the concentration of H+ increases pH of the solution decreases while when…

Q: Which of the following molecules has an assumed van't Hoff factor equal to 17 a.  MgS0+ b. NaHS04…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: Calculate the volume in milliliters of a 1.3M sodium chloride solution that contains 325. mmol of…

A:

Q: Use the figure to answer this question. Order these nuclei based upon the strength of their nuclear…

A: The order of the nuclei based upon the strength of their nuclear binding energies from weakest to…

Q: Calculate the mass of CaCO3 (MM = 100.0 mg/mmol) produces from heating 400.0 mg of CaC2O4•H2O (MM =…

A: Concept: heating an oxosalato salt of group-2 metal form corresponding carbonate of the metal and if…

Q: 12.0 g of sodium acetate is added to 125 mL of a 0.83 M acetic acid solution. What is the pH of this…

A: pH of buffer solution is calculated by using Henderson Hassel balch equation

Q: Determine the total number of sigma (ơ) bonds and the total number of pi bonds in the compound…

A: Determine the total number of sigma (ơ) bonds and the total number of pi bonds in the compound…

Q: The ideal mixture of two aqueous solutions of HNO3 is made by means of 100 mL of solution with 20 g…

A:

Q: 8.How many carbon atoms in 70 molecules of carbonic acid, H2CO3 are. A) 100 B) 4.8x1025 C) 70 D)…

A: Carbonic acid  have formula  H2CO3. Given Number of molecule of carbonic acid =70 Number of atom of…

Q: A 20.33 g sample of a substance is initially at 28.5 °C. After absorbing 2325 J of heat, the…

A: • The values provided in the question are:-  i) Mass of a substance, m = 20.33 g  ii) Initial…

Q: Predict the product of the reaction

A:

Q: 3. In butane and pentane, what are the Newman projections that show synclinal and antiperiplanar…

A: Newman projection: It is very useful in alkane stereochemistry. It helps to visualizes the…

Q: A voltaic cell has the following initial state: Cr (s) | Cr" (aq. 2.0 M)| C (aq, 9.0 M) | Cr (s)…

A: The cell given is, => Given: Volume of cell = 1.00 L And current = 26.0 A

Q: Which of the following sequences show an increasing strength of acidity? I. HNO2 (Ka=4.0 x 10-4)…

A:

Q: Br2(l) + 2 e - 2 Br (aq)E° = +1.09 V Min°+ (aq) + 2 e -- Min (s) E° = - 1.18 V which of the…

A: We have to find the strongest reducing agent.