9.Hard water contains a greater concentration of Sodium, whereas soft water has a higher concentration of calcium and magnesium compounds True False

Q: a. Find the molar heat of combustion (in kJ/mol) of isooctane vapor.

A:

Q: Will the following amino acid migrate in an electric field? Explain. + H3N- CH-C- CH-CH3 CH2 CH3

A: Given structure is :  Will the following amino acid migrate in the electric field = ?

Q: Propose the synthetic steps needed to reasonably afford the compound

A: 1. Benzene to Nitro benzene  2. Nitro benzene to m-dinitro benzene  3. Next it is converted into…

Q: 9. (Calorimetry - Determination of enthalpy) A coffee-cup calorimeter having a heat capacity of 472…

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Q: Balance the following chemical reactions a. Zn + AgCl → ZnCl2 + Ag b. N2 + H2 + NH3 c. NAOH + H2SO4…

A:

Q: What ion would stronium replace in hydroxylapatite?

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Q: She performed a normal phase chromatography to separate the components of an extract. She then…

A: Thin layer chromatography (TLC) and Rf factor

Q: ĆI

A: Here we have to write the given compound with all chiral atoms in R - configurations.

Q: ČI

A:

Q: Which of the following mixtures can be titrated with separate endpoints? weak acids with Ka…

A: Answer: In the titration end point is the point at which titration gets completed and indicator…

Q: 6. The following first-order reflections are observed for cubic crystals of copper when 1. = 139.2…

A:

Q: Explain why diethyl ether's boiling point is lower than the boiling point of butan-1-ol. Support…

A: Here we have to explain why the boiling point of diethyl ether is less than butan-1-ol.

Q: At 25 °C the formation of NH, (g) has a positive AS" systom. Is this reaction spontaneous or…

A: Given: ∆Ssystemo=+180 J/K T = 25oC ∆HfoN2g=0 kJ/mol∆HfoH2g=0 kJ/mol∆HfoNH3g=-45.9 kJ/mol

Q: Organic Chemistry The section asks for the synthesis: draw/ provide the likely organic products

A:

Q: profile-image Time remaining: 00 : 09 : 27 Chemistry A group was given the responsibility of…

A: Solutions- The solubility of three different solvents are given in g/100ml solvent

Q: 1. Steam distillation results in increased atmospheric pressure. 2.  The -CHO group stabilizes the…

A: 1. Steam distillation results in increased atmospheric pressure. TRUE

Q: 8. (Calorimetry - Determination of specific heat) A 5.1-gram piece of gold jewelry is removed from…

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Q: Kiko, a Chem 31.1 student, accidentally shuffled two test tubes with different compounds on his way…

A: We have to determine the compounds A and B.

Q: How many mL of (1.2000x10^-1) M nitric acid are needed to react completely with (3.35x10^1) mL of…

A:

Q: 2) On the graph below, draw a potential energy diagram for the following reaction: Q + R → S + T…

A: Activation energy is the amount of energy needed to reach the activated complex.

Q: A galvanic cell at a temperature of 25.0 °C is powered by the following redox reaction: 2+ 2MNO,…

A: Given-> [MnO4-] = 3.06 M [H+] = 1.02 M [Mn2+] = 4.19 M [Pb2+] = 2.07M

Q: • H0 OH Isomalose Complete the structure by dragging the labels to the appropriate targets. Reset…

A: The linker oxygen will be protonated first and then from H2O , OH- will be formed . And the…

Q: Compound A Compound B HO Он NH2 HO он H3C. CH3

A: The given compounds: 1(A) 1(B) 2 (A) 2 (B) 3(A) 3(B) These compounds have to be identified.

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A:

Q: Blank 1 are alkali and alkaline earth metals (primarily calcium, magnesium, potassium, and sodium)…

A: A question based on biological importance of chemical elements that is to be accomplished.

Q: An aqueous solution contains 0.500 M NAOH at 25.0 °C. The pH of the solution is

A:

Q: t functional group.

A:

Q: NaOH, H20 a) Heat (provide starting materials for Robinson annulation) NaOH, H2O b)

A: Robinson Annulation is a useful reaction for the formation of six-membered rings in polycyclic…

Q: Polymers may be composed of thousands of monomers. Draw three repeat units (trimer) of the polymer…

A: A polymer is a large molecule that is formed by the repetition of small units called a monomer, and…

Q: Exercise 2: 200 100 90 1. Reaction diagrams for a chemical process with and without a catalyst are…

A: An energy diagram is a diagram which shows the relative potential energies of reactants, transition…

Q: What is the difference between evportation and crystallization in terms of separating soluble…

A: Answer -  evportation - Evaporation happens when a liquid turns into a gas. It can be easily…

Q: Why is the pH at the equivalence point slightly different from that of the end point? Explain.

A: To explain: pH at the equivalence point is slightly different from that of the endpoint.

Q: 9. Which of the following statements best describes the entropy of water that freezes in a beaker?…

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Q: 12. What is the IUPAC name for the following compound? H CH,O H H-C-C-C-C-H A. 2-methylbutanone B.…

A:

Q: 4. Predict the Product(s) of the following reactions H;SO4 1. LIAIH4 HO 2. Н-0

A:

Q: 3. (a) Arrange the following compounds according to their reactivity towards electrophile. Justify…

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Q: Determine the retention factor (Rf) values of each spot on dye C. (use 2 decimal places)  What other…

A: We have to find the retention factor values of each spot on dye C.

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A: In the given linear expression, the X-axis represents time(min) and the Y-axis represents the…

Q: 12. Which form of such compounds will be predominant in aqueous HCI. Write formulas: NH, N. Me

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Q: Which of the following observations is INCORRECT? a. 4-aminophenol: wine red solution in FeCl3 b.…

A: (a) when 4-aminophenol is treated with Ferric chloride, FeCl3 then a violet colour complex is…

Q: 235U a. What is the atomic number of Uranium? c. Show the alpha, gamma, positron, and beta decays of…

A: Given,  235U , the atomic number of Uranium is:

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A: ->∆H = H(product)-H(reactant) If ∆H>0 => Endothermic If ∆H<0 => Exothermic ->An…

Q: The freezing point of a 0.21m aqueous solution of H2SO4 is -0.796oC. i = 2.04 b. Is the solution…

A: Given, Molality (m) = 0.21 m □Tf = 0.796 °c Kf = 1.86 °c/m □Tf = i×Kf ×m i = 0.796/0.21×1.86 =2.01

Q: 4. (a) Complete the following reactions and provide mechanism of the reactions involved. -CO2Et CN…

A:

Q: A mixture 0.500 mole of carbon monoxide and 0.500 mole of bromine was placed into a rigid 1.00-L…

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

Q: Generate a titration curve for 25.0 mL of 0.7233 M H;POs, with 1.256 M NAOH as the titrant, given…

A: The titration curve for the titration of 25.0 mL of 0.7233 M H3PO4 versus 1.256 M NaOH solution is…

Q: The vapor pressure of liquid carbon tetrachloride, CCI4, is 100. mm Hg at 296 K. A 0.261 g sample of…

A: Here vapour pressure of liquid CCl4  is 100 mm Hg at 296K .Here 0.261 g of CCl4 was placed in 400 ml…

Q: Give a clear explanation handwritten answer...

A: When HCl added , hydrogen ion react with salt and produce acid HA

Q: What is the pH of a 0.270 M  solution of H2SO4? Ka2 = 1.20×10–2

A: Here given, Ka2 = 1.20 × 10-2 Concentration of  H2SO4 = 0.270 M

Group 13 Elements

In the periodic table, group 13 elements exist in the first p-block. There are six elements present in group 13, which include boron (B), aluminum (Al), gallium (Ga), indium (In), thallium (Tl), and element 113 (ununtrium, (Uut)). Group 13 elements are also designated as the boron family.