What is the binding energy in kJ/mol nucleons for lanthanum-138? |k]/mol nucleons 57 H+ 81;n La The required masses (g/mol) are:H= 1.00783 ;;n= 1.00867 ;19 La = 137.90680

Q: If a tree dies and the trunk remains undisturbed for 1.775 × 10⁴ years, what percentage of the…

A: Given-> Half life = 5730 year  Time = 1.775 × 104 year.

Q: 0.8 0.6 0.4 0.2 3000 2000 1000 Wavenumber (cm-1)

A: IR mainly explaines the functional groups that are present in molecules  Alcohol: O-H stretching ,…

Q: The half-life of cesium-129 is 32.0 hours. How much time is required for the activity of a sample of…

A:

Q: View co insert a new object. Click here to disable. 3. Assuming constant temperature, what is the…

A: Given,  3. At constant temperature, the pressure inside the balloon when it's volume decreases from…

Q: A 34.4 g sample of a metal is heated to 99.0 °C and then placed in a calorimeter containing 107.1g…

A: Equation for heat energy ( Q ) is given by,       Q  =  m  ×  C × ΔT  m = mass  C =  heat capacity…

Q: A student constructed a voltaic cell by combining Sn/Sn2+ and Zn/Zn2+ two half cells and measured a…

A: If a species having higher reduction potential value, it will be reduced fast and the other species…

Q: Salt Theoretical Ksp MGCO3 3.5 x 108 Mg(OH)2 1.8 x 10-11 For the standardization of the HCl titrant,…

A:

Q: EFFECTS OF DYES TO THE POSSIBLE SOLUTIONS ENVIRONMENT EFFECTS OF INSECT POSSIBLE SOLUTIONS…

A: Dyes are organic substances and are used to impart colour to various substrates. Insect repellents…

Q: Which of the following will result in an increase in the calculated Ksp of Ca(OH)2? Receiving flask…

A: Let's check all the given statements.

Q: Some Radioactive Isotopes Useful in Medical Imaging Mode of Decay Isotope Half-life Use in Medical…

A: Given: Initial mass of isotope given = 60.3 mg. And time passed = 391.5 hours.

Q: Predict the structure of the compound with the following spectra

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Q: A solution composed of 75.0 g magnesium iodide (Mgl)) in 300 g of water at 9.7 °C. What is the mole…

A:

Q: Write a balanced nuclear equation for the following: The nuclide bismuth-210 undergoes alpha…

A: Write balanced nuclear reaction ---->

Q: Which of the following electrochemical methods requires the formation and measurement of an…

A: Analyte can be defined as a substance that we are going to analyze during a process or an…

Q: The overall reaction of hydroxide radical with hydrogen gas occurs as follows: Part A OH'(G) + H2(g)…

A:

Q: 1.Given the equilibrium for the indicator, HIn, below HIn (yellow) ⇌ H+ + In– (blue) pKa ≈ 3-4…

A: Answer: Indicator is the substance that is added in the analyte during acid-base titration and by…

Q: Which of these alkenes show cis-trans isomerism? For each that does, draw structural formulas for…

A: The alkene will show cis and transfer if it has two condition-  1- Different group should be present…

Q: Write the cell notation for an electrochemical cell consisting of an anode where Mn (s) pxidized to…

A: Anode : Mn(s) → Mn2+(aq) + 2e- Cathode : Cr3+(aq) + 3e- → Cr(s)

Q: Starting from toluene (PhMe) and HCN, provide a synthetic sequence that would afford the product…

A: Synthesis of the given product from toluene and HCN as reactants is given in the following step.

Q: . A 0.888 g sample of pentane, CSH12 is burned in a calorimeter with a specific heat capacity of…

A: Given: Mass of water = 1.20 Kg = 1200 g                                      (Since 1 Kg = 1000 g)…

Q: Give 5 differences of conjugated dienes and non-conjugated dienes

A: Dienes  are the system  of double bonds in which two double bonds present. They may be cyclic or…

Q: Provide a mechanism for the following transformation: CN 1. NaOH CO,H 2. H,O*

A:

Q: Draw the following functional group: 4,5-dihydroxy-3-oxocyclohexene-1-carboxylic acid

A: The compound given is 4,5-dihydroxy-3-oxocyclohexene-1-carboxylic acid.

Q: Give 5 differences of Configurational isomers and Geometrical isomers

A: Isomer  have Same molecular  Formula but different arrangement  in 3D space

Q: A constant current of 0.50 A is used to deposit copper at the cathode and oxygen at the anode of an…

A: Current = 0.50 A  Time = 10 minutes  F = 96485 C  Molar mass of copper = 63.55 g/mol  Weight of…

Q: 1. Predict the product of the Mixed Adol Condensation reaction below, under basic conditions with…

A:

Q: Determine the equilibrium constant, K.

A: Initial pressure of Cl2 = 3.018 bar Initial pressure of SO2 =1.290 bar Total pressure at equilibrium…

Q: Compute for the CEC and % base saturation of the soil if; Ca = 15 me/100g Fe = 15 me/100 g K = 19…

A: Solution: Data given- Ca = 15me/100g, Fe = 15 me/100 g, K = 19 me/100g, Mn = 18 me/100g,  Mg = 8…

Q: What was done to ensure that there are no more chloride ions present in the precipitate? (A)…

A: We have asked what was done to ensure that there are no more chloride ions present in the…

Q: Standardization of NaOH against KHP Example 0.2500 II Wt. of KHP, g Final reading, mL NaOH Initial…

A: Solution- Data given- Volumes of NaOH and HCl and their concentration.

Q: either SN1 or SN2 mechanisms.

A:

Q: Above what Fe2+ concentration will Fe(OH)2 precipitate from a buffer solution that has a pH of 8.10?…

A: Answer: 3.07×10^-5 M

Q: Combining the amino acids proline and cysteine could create the peptide prolylcysteine A) True  B)…

A: A) True

Q: Which of the following describes the reaction: 218 Po →°,e+ 218 At 84 ³Po→,e+ 85

A: In above reaction atomic number on product side increase by one while mass number remains unchanged.…

Q: 14 12 10 8 2 10 20 30 40 50 60 Volume of 0.1000 M HC1, mL !Curve for the titration of 25.00 mL of…

A: The titration curve given is,

Q: The data below were collected using a pH electrode and a set of pH standards. What is the pH of an…

A:

Q: 4.The following two molecules undergo stereospecific eliminations reactions. Draw the expected…

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

Q: The pH of a 0.300 M solution of NaOAc is:   (For HOAC, Ka = 1.8 x 10-5) a. pH = 4.90 b. pH = 11.37…

A:

Q: 2. AClsle) → ACI3(e) + Clz{e) AH = ? Given: Aa(s) + 6CI2(e) → 4ACI3{g) AH = -2439 kJ 4ACIS(e) →…

A:

Q: Reaction 1: 20F2 (g) → O2(9) + 2 F2 (9) AH=-49.4 kJ Reaction 2: N2 (g) + 202(g) → 2NO2 (g) AH=+66.4…

A: When the gibbs free energy change is positive then the reaction is spontaneous and when the gibbs…

Q: Draw the line-angle formula for each of the following fatty acids. Part A palmitic acid Draw the…

A: Fatty acids are carboxylic acid with a long hydrocarbon chain.

Q: Туре Enthalpy Entropy (ДН)? Spont.? (-AG)? Reaction (AS)? Yes, No, or Maybe (TD*)

A:

Q: A solution is prepared that is initially 0.42M in hydrofluoric acid (HF) and 0.28M in potassium…

A: HF  +  H2O  ----->   F-   +  H3O+

Q: Name this compound: HOCCHCH, ÓCH3

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

Q: 1) The nitrite ion concentration in a given canned goods sample was determined by redox titration…

A: In the redox titration process of nitrite ion (NO2-) with permanganate ion (MnO4-), manganese ion…

Q: 1. OH H. Br 2. HO- 3.

A:

Q: The heat of fusion ΔHf of dichloromethane (CH2Cl2) is 6.2 kJ/mol. Calculate the change in entropy ΔS…

A: Calculations have been done in the following step.

Q: What is the absolute configuration of the molecule on the photo?

A: RS nomenclature: The RS nomenclature is an important nomenclature system for denoting the…

Q: What is the reaction of corn oil and sulfuric acid? What happens in Friedel-Crafts Reaction with…

A: Unsaturated fats will react with sulfuric acid to form C-O-S bonds where carbon from oil will attack…

Q: At STP conditions, 25 mL of hydroiodic acid generates 1.20 L of H2 gas when combined with excess…

A: Given-> Volume of HI = 25 ml = 0.025 L      (1 L = 1000 ml) Volume of H2 gas = 1.20 L At STP->…