Ba List the number of protons, neutrons, and nucleons (protons + neutrons), in that order, for an isotope with the symbol: Multiple Choice 81, 137, 218 81, 55, 137 56. 81. 137 56. 137, 193 137, 56, 193

Q: OH "R/S Br Design a synthesis for this reaction above:

A: For the given transformation, alcohol is an potential intermediate and it undergo oxidation to…

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Q: A micropipette was used to draw 450 microliters of solvent X and when measured using an analytical…

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Q: 4.A(aq) + 3B(aq) = C(aq) + 8D(aq) AG355K =? The reaction above was run at 388K and allowed to come…

A: The reaction given is, => And the equilibrium concentration of species at 388 K are,

Q: Use the References to access important values il needed for this qu In the laboratory, a general…

A: pH =2.490

Q: For the following compounds, into how many proton NMR peaks will each of the circled protons be…

A: *Number of proton NMR  peak can be calculated     from near by equivslent proton. * It is calculated…

Q: A chemist adds 0.30 L of a 2.04M sodium thiosulfate (Na, S,0,) solution to a reaction flask.…

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Q: The equibrium constant for the reaction Nijs) + 4COlgi - NICOMlal is 5.0 - 104 at 25°C. What is the…

A: The equilibrium expression written for a reaction written in the reverse direction is the reciprocal…

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

A: Weight of ZnS = 100.0 gm Weight of O2 = 70.0 gm

Q: The half-life of 14C is 5730 yr. Find the number of disintegrations per hour emitted by 1.0 mol of…

A: half-life of 14C is 5730 yr.

Q: A reaction is experimentally found to follow the rate law, Rate = k[Aj? where k = 0.355 M'min1.…

A:

Q: Radioactive decay is measured in terms of "half-life", which is the number of years required for…

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

Q: Meo OMe NMe

A: We have to carry out the given transformation.

Q: Which of the following substances are weak electrolytes? HCl, HC2H3OO, NH3, KCl A) HCl, KCl B)…

A: ->HCl , CH3COOH , NH3 , KCl

Q: pr the balanced equation shown below, how many moles of SOs will react with .7727 moles of CaHsS? he…

A:

Q: With this information and the specific heat of water, 4.184 J/(g·°C), calculate the specific heat,…

A: Given,  The specific heat of gold metal,  when 38.600 g Au metal at 65.17 °C added to 60.00 g of…

Q: Suppose K = 4.5 X 10-3 at a certain temperature for the reaction PCl5(g) ⟺ PCl3(g) + Cl2(g) If it is…

A: The equilibrium reaction given is, => PCl5(g) ⟺ PCl3(g) + Cl2(g)…

Q: A sample of gas occupies a volume of 72.1 mL. As it expands, it does 122.1 J of work on its…

A: Given data :

Q: 1. What is the molarity of a solution in which 150g of Ca© are dissolved in 190ml of solution? (MW:…

A: Formula used:  Molarity: no of Mole/Volume in L  Molality: no of mole of solute/ weight in kg of…

Q: 5.10 moles of a compound are heated to boiling point, at constant pressure, absorbing 797 kJ of…

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Q: 4. Formic acid, HFor, has a K value of 1.8 x 104. You need to prepare 125 mL of a buffer hav- ing a…

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Q: Which of the following is a correct relationship between AG° and the equilibrium constant, K, for a…

A: Since you have posted multiple questions as per guidelines we can answer only one per session . If…

Q: 4.When the equation below is balanced the coefficient of nitric acid, HNO3 is. Zn + HNO3 - Zn (NO3)2…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Ponatinib HCI, an antitumor drug: H This molecule is missing sixteen lone pairs. Add them to the…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

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

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Q: CHM220 Page 3 он m. CH3 n. HC

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

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Q: Fish contains a collapsible swim bladder containing air which they use to help them maintain…

A: Given :-  Initial pressure = 755 torr Initial volume = 42.7 L Initial temperature = 28.8°C Final…

Q: use this equation Ba(NO3)2 + Na2SO4 = BaSO4 + 2 NaNO3 How many grams of precipitate will form…

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

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Q: A weak acid has Ka of 4.82 x 10-5.  What is pKa for this weak acid? Enter a numerical value in the…

A: Given: Ka = 4.82 × 10-5

Q: Study this chemical reaction: Pb+O, - Pbo, Then, write balanced half-reactions describing the…

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Q: . Tetrahydrocannabinolic acid (THCA), the precursor to THC, a psvchoactive: H.Q • This molecule is…

A: The compound given is,

Q: Draw the MO diagram for the hypothetical square planar PtH42- ion. Consider only the s-interactions.…

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Q: help with mechanism plz NH3 -он 2 CI 'N' S. H. NaOH Он

A: The reaction given is,

Q: In the laboratory, a general chemistry student measured the pH of a 0.544 M aqueous solution of…

A: Given :-  Concentration of aqueous solution of acetic acid = 0.544 M  pH = 2.488  To calculate :-…

Q: The US Department of Health recommends adding sodium fluoride to municipal drinking water to reduce…

A: Given : Solubility of NaF = 1.5×10-3 g L-1 Molar mass of NaF = 42 g mol-1  Molarity of NaF = ?

Q: The atomic mass unit is based on the mass of the _________ atom.

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Q: Write a balanced half-reaction describing the reduction of gaseous dichlorine to aqueous chloride…

A: Given: Reduction of gaseous dichlorine i.e. Cl2 (g) to aqueous chloride i.e. Cl- (aq) ions.

Q: If 24% of a certain radiolsotope decays in 6.5 years, what is the half life of this isotope?…

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Q: जिए चीर लाटtihenren मि् भण्या e dreaction2 ७. A. ०३ 2. H2०2

A: ->O3/H2O2 is reagent used for oxidative Ozonolysis reaction and form ketone or carboxylic acid.

Q: Identify the major aldol condensation product obtained when the following compound is heated in the…

A: Given compound is pentanal  And it has aldehyde functionality. It is a base catalyst reaction.…

Q: NAOH, H20

A: Detail mechanistic pathway is given below to find out the product

Q: use this equation 2Na3PO4(aq) + 3Ba(OH)2(aq) → Ba3(PO4)2(s) + 6NaOH(aq) How many moles of…

A: The balanced reaction given is, => 2 Na3PO4 (aq) + 3 Ba(OH)2 (aq) → Ba3(PO4)2 (s) + 6 NaOH (aq)…

Q: Express your answer in joules per kelvin to one decimal place.…

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Q: Весause s is a strong acid, it dissociates almost com- pletely in water. That means the…

A: We have given that, the concentration of H+ is nearly equal to the concentration of HNO3.

Q: A 763.9 g sample of hydrogen experiences a temperature change of +27.05 °C. The specific heat…

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

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

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Q: At 1275 K, ∆G° = 18.1 kJ/mol for the reaction 3 A (g) + B (g) → 2 C (g). If the partial pressures of…

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Q: Average density of a particular substance is 0.9981 g/cm3. What is the volume of 4501.190 grams of…

A:

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.