Q11

Q: In this experiment, it was assumed that the fatty acid solute did not dissociate in solution (i =1)....

A: The question is based on the concept of colligative property. depression in freezing point is a coll...

Q: Select the best pair of answer below justifying the reason for your choice.

A:  Friedel-Craft's alkylation of tolene by reaction with methyl chloride in the presence of FeCl3 and ...

Q: 7. Predict the product for each reaction shown below.

A: Reaction a and b are Friedalcraft  alkylation reactions These reactions carried out in presence of L...

Q: QUESTION 7 How many grams of LigN can be formed from 1.75 moles of Li? Assume an excess of nitrogen....

A: Applying concept of limiting reagent and mole concept.

Q: ) How many valence electrons are there in the tetramethylammonium ion, (CH3)4N+?a. 32 b. 18 c. 8 d. ...

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Q: 3)

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Q: Select the best pair of answer below justifying the reason for your choice.

A: When an acidic substance is dissolved in water, it tends to generate the H+ ion. Phenol and ethanol ...

Q: Describe any 4 types of chemical reactions. Write one example for each type.

A: 4 types of chemical reactions are  1. Addition reactions 2. Decomposition reactions 3. Displacement ...

Q: It can be more than one

A:   1. Combination reactions : In which two or more substances combine to form a single new substance ...

Q: Can acetone react with sodium bicarbonate (NaHCO3)? Why or why not?

A: Aldehydes and ketones are carbonyl compounds that contain a C=O group. In an aldehyde C=O group is p...

Q: 4 A certain carboxylic acid belonging to the homologous series of aliphatic saturated monocarboxylic...

A: General formula of a aliphatic saturated carboxylic acid is R-COOH, where R is alkyl group. Given mo...

Q: A student determined the concentration of copper by ion exchange. He obtained the following results:...

A: Given : molarity of NaOH and volume of NaOH and volume of CaCl2.  To find : no. Of moles of copper(I...

Q: There's the information to go off please show work and if more than onw problem is done label so I k...

A: Given:Mass of NaCl +  dish after second drying =37.323 g Mass of evaporating dish=35.452 g Mass of N...

Q: Q11 (A) Describe any 4 types of chemical reactions. Write one example for each type.

A: The different types of a chemical reaction are: 1. Combination reaction 2. Decomposition reaction 3....

Q: Select the best pair of answer below justifying the reason for your choice.

A: Atoms usually have a neutral charge despite having both positively and negatively charged subatomic ...

Q: Example2: Calculate [H;0"], [OH] concentration and pH and pOH of 0.2 M aqueous solution of NaOH.

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Q: Select the best pair of answer below justifying the reason for your choice.

A: Electrons gain energy and move from ground state to excited state. They do not remain in the excited...

Q: Quantum numbers arise naturally from the mathematics used to describe the possible states of an elec...

A: 1) n=3, l=-1, m=1, ms=-1/2 The possible values of l are 0 to (n-1). Thus for n = 3, l can have value...

Q: Write the net-ionic equations involved in the hydrolysis of salts of the following compounds. Na2CO...

A: A salt is formed by the reaction of an acid and a base. It is an example of ionic compound. Salt hyd...

Q: A solution is made by dissolving 0.0475 kg of biphenyl (C₁₂H₁₀) in 350.0 mL of benzene (C₆H₆). What ...

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Q: Convert 312 mg to kilograms. Oa) 3.12 x 10 4 kg O b) 3.12 kg O c) 0.312 kg O d) 3.12 x 105 kg O e) 3...

A: . 1mg = 10-3 gram . 1gram = 10-3 kg Therefore, 1mg = 10-6Kg 

Q: Tungsten metal crystallizes with a body-centered cubic unit cell. The volume of the cell is 0.0317 n...

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Q: What is the primary species in solution at the halfway point in a titration of NH: with HBr? A) NH: ...

A: Ammonia is highly soluble in water. Ammonia reacts with water to form ammonium hydroxide. NH3aq + H2...

Q: 50.00 mL sample of sulfuric acid required a total of 15.28 mL of potassium hydroxide solution 1,478 ...

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Q: Select the best pair of answer below justifying the reason for your choice.

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Q: A chemist must prepare 600.0 mL of hydrobromic acid solution with a pH of 1.90 at 25 °C. He will do ...

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Q: 8)

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Q: Determine the empirical formula of a compound having the following composition: B a = 80.1%, 0 = 18....

A: When it is assumed that mass is 100 g. Then :  Mass of Ba = 80.1 g  Mass of O = 18.7  g  Mass of H =...

Q: you are told 3 possible cations in solution (Ba2+, Ca2+, Mg2+) only 2 of them exist, with one missin...

A: Here all the three cations belongs to Group IV cations.  

Q: The following data were obtained for the reaction 2C102 (aq) + 20H (ag) → Cl03 (aq) + C1O2¯ (ag) + H...

A: Consider the given reaction as; 2 ClO2 aq + 2 OH- aq → ClO3- aq + ClO2- aq + H2O l Rate Law for the ...

Q: Tungsten metal crystallizes with a body-centered cubic unit cell. The volume of the cell is 0.0317 n...

A: d) In body centered cubic unit cell, eight atoms are present at the eight corners. One atom is prese...

Q: What is the empirical formula of strontium chloride in problem 5?   Sr Cl Mass of element (in g...

A: The answer of following question is given below.

Q: I need help finding the signals, chemical shifts and splliting for the IR structure and C13 NMR stru...

A: IR: infrared spectroscopy tells about the functional groups present in the structure with the strong...

Q: The following acid-base reaction occurs spontaneously in the gas phase: NH₃(g) + HCl(g) ⇌ NH₄Cl(s) D...

A: Answer:- This question is answered by using thge simple concept of calculation of equilibrium pressu...

Q: Based on the amounts of copper metal and nitric acid you used in the first reaction, calculate the n...

A:   Molarity = No. of moles / Volume So, No.of moles = Molarity x Volume No. of moles = 15.8 M x 5.2 m...

Q: The compound below is aromatic even though it has 16 pi electrons. Explain

A: - Given Compound is aromatic  -Overall system consists of 16 pi electrons  - but only 14 pi  contrib...

Q: Which of the following is correctly matched? sucrose - C₁₂H₂₂O₁₁ baking soda - Al(OH)₃ table salt -...

A: Correctly matched is : Sucrose - C₁₂H₂₂O₁₁    Baking soda - NaHCO₃  Table salt - NaCl Antacid - Al(O...

Q: 2. What weight of As2O3 and of CuO are equivalent to 1.000 g Paris green, Cu3(AsO3)2.Cu(C2H3O2)2 ( F...

A: One molecule of Paris green contains two atoms of As and four atoms of Cu. So, Moles of As2O3 = 14 x...

Q: QUESTION 5 What element is being reduced in the following redox reaction 2 S02 (g) + 02 (g) → 2 SO3(...

A: The balanced redox Chemical Reaction given in the question is -   2SO2(g) + O2(g) ----> 2SO3(g) H...

Q: The molar mass of oxygen atom (O) is 16g/mol that is the number of Avogadro for * 3mole equal to

A: The question is based on mole concept. we have been given molar mass of the oxygen. we need to calcu...

Q: A 90.0 g piece of metal, initially at 98.6°C, is placed into 120.0 g of water initially at 24.3°C. I...

A: this problem can be solved by  heat given  by metal = heat taken by water

Q: What is the Ka for a 0.1459 M acetylsalicylic acid solution, C9H7O4H, if it had a hydronium ion conc...

A: Using  the the Rate constant  expression  at equilibrium  we can find  the rate dissociation  consta...

Q: A gas has a pressure of 1.25 atm and a volume of 5211 mL at 57 °C. How many moles are in the sample?...

A: Ideal gases are those gases which follow ideal gas equation. The relation between pressure, volume, ...

Q: For the chemical reaction   CaI2+2AgNO3⟶2AgI+Ca(NO3)2   what mass of silver iodide is produced from ...

A: Applying concept of limiting reagent and mole concept.

Q: Select the best pair of answer below justifying the reason for your choice.

A: Fluorine is an element represented by the symbol F and is present in halogen family. The atomic numb...

Q: Enter your answer in the provided box. Calculate the volume (in liters) occupied by 1.97 moles of ni...

A: Using Ideal gas Equation PV=nRT , The volume of nitric oxide is calculated.

Q: Suppose 0.0387 g of sodium iodide is dissolved in 200. mL of a 14.0 m M aqueous solution of potassiu...

A: We know that Molarity = number of moles of solute / volume of the solution in L Given that mass of s...

Q: Chemistry Question

A: Two questions based on solubility and ionic mobility, which are to be accomplished.

Q: Is the unknown solution an acid or  base?                           Is the unknown solution strong o...

A: The question is based on the concept of buffer solution. a buffer is a solution which resist change ...

Q: Which of the following would decrease the rate of solvation for solid NaCl in water?   Question 7 ...

A: When a solid solute NaCl is mixed with water then Following factors effect the rate of solvation of ...

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".