A. Identify the type of solution and calculate the pH for each of the following: i. 0.100 M HONH2 (Kb = 1.1 x 10-8) ii. 0.100 M HONH3Cl iii. Pure H2O

Q: What is the pH of a 500 mL buffer containing 0.200 moles NH3 and 0.350 moles NH4CI? Kb = 1.8 x 10-5 ...

A: The given Kb value is, Kb=1.8 x 10-5 pKb=-log Kb        =4.744 pKa=14-pKb        =14-4.744        =9...

Q: Strontium carbonate decomposes by the following reaction: SrCO3(s) → SrO(s) + CO2(g) In one reaction...

A: From the given data we will figure out the moles of CO2 produced then we can easily calculate averag...

Q: How many moles of H₂O can be formed from 1.71 × 10²³ molecules of NH₃ from the following equation? 4...

A: Given, 4 NH₃(g) + 5 O₂(g) → 4 NO(g) + 6 H₂O(g) Number of molecules of NH3 = 1.71 × 10²³ molecules Mo...

Q: A gas-phase reaction has the following four step mechanism: Cl2→2 CI CI+ CH4→ HCI + CH3 CH3 + Cl2→ C...

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Q: 7H5O2 = 160.21 C7H8O2 = 122   Density: C7H8 = 0.87 g/mL KMnO4 = 2.7 g/mL KC7H5O2 = 1.5 g/mL C7...

A: The solution is as follows:  

Q: Problem 2 If 200g of Polymer A, 300 g of polymer B, 500 g polymer C, and 100 g D are mixed, calculat...

A: Soln

Q: QUESTION 6 What is the mass of 5 atom(s) of copper in grams? Oa. 1.9 × 1021 10-22 g O C. 7.65 × 10-2...

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Q: Which of these compounds is most soluble in water at pH 7.0? (Note that the non-ionized forms are sh...

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Q: A. Identify the name of the functional group where the given organic compounds belong (alcohol, ethe...

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Q: - of gasoline is öčt moles of carbon

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Q: What is the pH of buffer prepared by mixing 250 mL of 0.2 M benzoic acid and 100 mL of 0.25 M sodium...

A: PH of buffer solution is calculated by using Henderson Hassel balch equation

Q: DIVISION NG NG LEN HHHH 東 WRAP-UP Direction: Evaluate the effect of intermolecular forces of molecul...

A: In the given problem we have to check the relation of strong and weak intermolecular force with visc...

Q: ACTIVITY/EXERCISES Direction: Identify the given substances if it is polar or nonpolar, and which ty...

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Q: 2. The initial rate of the reaction of P +Q→ products was experimentally determined. [P], M [Q], M I...

A: The kinetics data given is,  

Q: Determine each statement if it describes dissolution or disintegration.   It is mainly affected by t...

A: Dissolution means the disove of substances in different solvents. It is applicable for solids, liqui...

Q: culate CaCO3 concentration: Ca2+:149.2 mg/L as CaCO3, Mg 2+ : 65.8 mg/L as CaCO3, Na+ :17.4 mg/L as ...

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Q: Total number of H-bonds formed by water molecules in 'liquid' state are a   4 b   3 c   2 d  ...

A: To identify: The number of hydrogen bonds formed by the water molecules in the liquid state.  

Q: how many moles of alum will be produced if a student reacts 0.25 moles of aluminum with 0.35 moles o...

A: Given: Moles of Al = 0.25 mol. Moles of KOH = 0.35 mol. And moles of H2SO4 = 0.76 mol.  

Q: Starting with the following equation, Fe₃O₄(s) + CO(g) → Fe(l) + CO₂(g) calculate the mass in grams ...

A: Given Reaction:- Fe3O4(s) + CO(g) -----> Fe(l) + CO2(g) Balanced reaction:- Fe3O4(s) + 4CO(g) ---...

Q: Eye drops must be at the same osmotic pressure as the human eye. A commercial eye drop solution is 0...

A: Given,  Concentration of solution, c = 0.331 M  Temperature, T = 37 °C = (273+37) = 310 K  Osmotic p...

Q: (c) An ideal monoatomic gas at 1 bar and 300 K is expanded adiabatically against a constant pressure...

A: (iii) Given Cv=1.5R=3/2R             Cp-Cv=R                  Cp=R+1.5R                     =2.5R=5/...

Q: buffer solution is prepared by dissolving 4.7 g of nitrous acid, HNO2 , and 13.8 g of sodium nitrite...

A: The solution is as follows:  

Q: evel Diagrams and Electroh Configu 1. Write the 15 sets of quantum numbers that describe the 15 elec...

A: As per our guidelines we can only solve first question. Please resubmit the other questions as next ...

Q: Briefly discuss the difference between a homogenous mixture and a heterogeneous mixture.

A: When different substances mix to form a uniform mixture in same phase , then it is called homogeneou...

Q: What is the volume needed for dH2O

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Q: oxidation state

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Q: Which of the following functional groups is non-polar? A В D E А. А В. В

A: When two uniformly strong (electronegative) atoms are joined, their electron sharing is equal. When ...

Q: 10. Which ion has a higher ability to polarize? a) Na* or Mg* b) Mg²* or Ba?+ Explain your reasoning...

A: The polarizing power of cations depends on the charge density and size of the cation.

Q: C;H;CIO, 0.93 12.5 12.0 Aall. 0.95 2.97 5.0 4.5 4.0 3.5 3.0 (а)

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Q: The above section of an NMR was taken from a student sample of this experiment. You see while the 2H...

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Q: grams

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Q: Make a block schematic diagram for the precipitation, separation and identification of the following...

A: We have to identify the ions Al+3, Fe+3, and Ni+2ions.

Q: Starting material Desired product multi-step synthesis? OH HOʻ Proposed Synthesis: OH

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Q: Determine the degree of dissociation if the moles of the substance is equal to 9.19 moles and the to...

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Q: Which of the following mixtures would result in buffered solutions when 1.0 L of each of the two sol...

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Q: process and the concept of thermodynamics in the following photo of the refrigerator.

A: concept of thermodynamics in refrigerators, air conditioners and  heat pumps. the concept involved i...

Q: percent hy

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Q: 2. Name the following hydrocarbon. Predict the hybridization (sp³, sp2, o sp) in the asteroid carbon...

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Q: A chemist is studying the following equilibirum, which has the given equilibrium constant at a certa...

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Q: The slope of the black dotted line in the figure below is best described as: Time A. The initial rat...

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Q: Which of the following molecules is most soluble in water (they all have similar MW)? a   CH2OH-CH...

A: Given: Molecules with similar molecular weight.  

Q: GIVE THE BALANCED CHEMICAL EQUATION FOR EACH OF THE FOLLOWING REACTIONS: ( 1. 2. 3. identification o...

A: There are different type of test to identify different ions present in their respective compounds - ...

Q: Prepare 500 mL 0.1 M acetate buffer, pH = 4.3, from 0.1 M stock solutions of acetic acid and its sa...

A: Buffer is a solution that contains weak acid and its conjugate base in some fixed ratio that defines...

Q: All of the following statements about preparation of spotting needles are true EXCEPT: Select an ans...

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Q: H3C. CH3 CH3 CHa CH3 CH3 H CH CH CH 4. H. CH3 HO HO H3C CH HC CH, 8, On

A: The compound 7 and 8 are intermediate of lanosterol. The structure 7 and 8 may be different in any r...

Q: Analysis methods of food colorants should not be: a. Simple and easy 1 b. Rapid, of short time c. Qu...

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Q: A solution is prepared by mixing 24.56 g of methanol, CH40 (32.04 g/mol); 62.85 g of water (18.02 g/...

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Q: A student needs 22.0g of ethanol for an experiment. If the density of ethanol is 0.789 g/mL, how man...

A: • The values provided in the question are:-     i) Mass of ethanol, m = 22.0 g   ii) Density of etha...

Q: No Exceptioi Fill up the empty boxes with the correct chemical structures.

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Q: Which of the following (NBr3, BF3, OF2, IF3) is(are) exempted from the octet rule? Check all that ap...

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