Q: Question 12 Consider the titration of 50.0 mL of 0.350 M NH3 (K, = 1.74x10 5) with 100 mM HCI. What ...
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A: Molarity is defined as number of moles of solute dissolved per litre of solution.
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A: Chemical equilibrium is defined as the stage at which both reactant and product are in equilibrium.
Q: Ammonia gas can be prepared by the following reaction: CaO(s) + 2 NH4 Cl(s) → 2 NH3(g) + H2O(g) + CA...
A: Actual Yield of ammonia = 147 gram Theoretical Yield of ammonia = 291 gram
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A: A carbocation is a reaction intermediate. When an alkene reacts with HBr (or any other halogen acid)...
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Q: ill salt solution freez lecular weight of Na NaCl is a strong ele tively.
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Q: HClO4 M. a. Write the balanced reaction which occurs during the titration: Reaction: b. Label the di...
A: PH = - log [H+] Where [H+] = concentration of H+ Note : As per our company guideline we can answer o...
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A: NaCH3COO = 0.770 M Ka = 1.8 × 10−5
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A: Zn is more reactive metal then Copper.
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Q: NO2 NO 2 H N. +
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A: Phenolphthalein is an indicator to determine whether the given solution is basic or not. In basic so...
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A: Chemical equilibrium is defined as the stage at which both reactant and product are in equilibrium.
Q: 2. Consider the transition for the H atom from n=4 to n=2. a) What would be the theoretical change i...
A: Given-> n(initial) = 4 n(final) = 2
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A: Mass percent is the percent ratio of mass of element in the compound to the total mass of the compou...
Q: How would you synthesize the following compounds from butanoic acid using the reagents from the tabl...
A: Starting compound Butanoic acid
Q: URGENT PLEASE ANSWER CORRECTLY THANK YOU
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Q: 4. Calculate the molarity of a solution made by dissolving 35.1g of H2SO4 in enough water to form 45...
A: Molarity is defined as number of moles of solute per litre of solution.
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Q: OH CrO H,SO, ОН CH3 f) H3C- Br2 -OCH3- FeBr, g) CH, NBS Na*O-t-Bu A h)
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Q: Consider the following reaction: A (s) B (g). The.molar heat capcities of A (s) and B (g) are 55 and...
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Q: 24. What is the molality of a solution produced using 15.2 g of Calcium chloride and 345 g of methan...
A: Molality of the solution is defined as the number of moles of solute dissolved in 1 Kg of solvent. T...
Q: Draw two possible configurations at the given compound's (in the picture) 2 chiral centers.
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Q: Q3. Briefly answer any two (2) of the following. i) How Mendeleev's periodic table was different fro...
A: Given question is : (i). How Mendeleev's periodic table was different from Henry Mosely's periodic ...
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Q: What is the equilibrium concentration (in M to three decimal places) of HBr for the following reacti...
A: Given, H2(g) + Br2(g) ⇌ 2HBr(g) Equilibrium constant (Keq) at 25°C = 0.000351 Initial concentration...
Q: What is the pH of a 0.40 M ammonia solution? Ka is 5.6 X 10-10 11.43 O 2.57 O 9.18 O 4.82
A: Ka = 5.6 x 10 —10
Q: ). To produce 3.00 L of a 1.90 M solution of sodium hydroxide, how many grams of sodium hydroxide mu...
A: Dear student since you have asked multiple questions but according to guidelines we will solve 1st q...
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Q: 5. Sucrose is about 42.12% Carbon, 6.48%Hydrogen and 51.4% Oxygen. Determine the mole fraction of ea...
A: To solve this problem we have to calculate the mole fraction of each elements present in sucrose .
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- Polonium is the only metal that forms a simple cubic crystal. Its coordination number is a. 4 b. 12 c. 8 d. 6 Which is incorrect about copper metal? a. It is malleable and ductileb. It is good conductor of heat and electricity.c. it is more active than gold.d. it is good oxidizing agent than iron.Which of the following statements is false? a. Stainless steel contains chromium and nickel, which form protective oxide coatings. b. Galvanized steel is coated with zinc to form an oxide coating. c. Cathodic protection is a method used to protect steel in buried tanks and pipelines. d. Chromium and tin are often used to plate steel by forming a durable oxide coating. e. All of these are true.Superconductors from mixing mercury and lead needs what condition to work effectively? a. hot temperature b. relative temperature c. cool temperature d. room temperature *Choose only one answer and explain.
- What are semi-conductors? Give an example?9. electroplating means using electricity to coat one metal with another, to make it look better, or to prevent corrosion A.True B.False5. Which treatment is frequently used to protect aluminium articles from subsequent erosion? A. Making aluminium the anode during electrolysis. B. Dipping the aluminium in hot aqueous sodium hydroxide. C. Dipping the aluminium in molten cryolite. D. Coating the aluminium with a less reactive metal. Which of the following is not a use of silicones? A. Waterproofing. B. Lubricants. C. Computer chips. D. Implants. 7. Which of the following statements, comparing the physical properties of calcium and nickel is correct? (i) The melting point of calcium is lower than that of nickel. (ii) Calcium has a much higher density than nickel. (iii) Calcium does not behave as a catalyst whereas nickel does. A. (i), (ii) and (iii) are correct. B. (ii) and (iii) are correct. C. (iii) is correct. D. (i) and (iii) are correct. 8. Two allotropic forms of sulphur are rhombic and monoclinic. Which of the statements below is not true? A. They both dissolve in nonpolar solvents such as benzene. B. They both…
- If you wish to reuse a discharged common dry cell, what is the best possible method to do it? a. Plug it in a source of higher voltage to replenish reactants. b. Provide continuous supply of reactants such as hydrogen gas in fuel cells. c. Increase the temperature to improve the conductivity of metals. d. None, common dry cells are non-rechargeable5. Why are most metals polycrystalline in microstructure. How would you get a: a. large grained metal b. fine grained metal7. A fuel cell is more efficient than combusting the hydrogen in a combustion engine because: a. Hydrogen combines with oxygen faster in a fuel cell. b. C. The electricity can be used to run air conditioning in the car. Hydrogen is explosive, so a fuel cell is less dangerous. Less energy is lost as heat. d.
- Which of the following is not true about the copper plating process? a. Copper ions are produced at the anode. b. Copper plating is a spontaneous process. c. Copper metal is deposited at the cathode. d. A copper sulfate electrolytes solution is used in the process.The elements which has/have the most unstable oxidation state is: a. alkali earth metals b. non-metals c. stable metals d. alkali metals *This is a multiple choice type of questionWhich of the following are incorrectly paired? a. Downs cell – electrolyzes molten sodium chloride b. Alumina – pure aluminum oxide c. Hall-Heroult process – uses cryolite in production of aluminum d. Mercury cell – used in preventing contamination of NaOH by NaCl e. All of these are correct.