Simplify. 2 -5 Write your answer with a positive exponent only. 3.

Q: A bicyclic heterocycle aromatic ring with four N atoms. a Pyridine b Pyrazine c ...

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Q: A 4.00L tank at 25.0 degrees C is filled with 4.0g of nitrogen monoxide (NO) and 8.3g of sulfur hexa...

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Q: What is the pH of a solution that is 0.10 M potassium nitrite, KNO2 and 0.17 M HNO2? The Ka for HNO2...

A: When the solution of weak acid and its salt from strong base is present then it is called acidic buf...

Q: Four different substance each have identical masses. The specific heat capacities of these four subs...

A: The quantity of heat required to alter the temperature of a unit mass of a substance by one degree i...

Q: 2) Determine the pH, pOH, [H3A], [H2A], [HA-], and [A$] for a 0.15 M solution of H3A. The respective...

A: Given the molarity of the triprotic acid, H3A = 0.15 M  Given pKa1 = 3.51 or Ka1 = 10-3.51  pKa2 = 5...

Q: Give strucutre of products formed including stereochemistry if appropriate. If more than one product...

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Q: Potassium superoxide, KO2, reacts with carbon dioxide to form potassium carbonate and oxygen: 4KO2 +...

A: Given data :  Mass of KO2 = 2.43 g  Mass of CO2 = 4.5

Q: Choice A. Given the following balanced equation: 4 NH3 (2 +5 O2 (O 4 NO O + 6 H0 m (g) a) If you are...

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Q: Identify the electrophilic centres in the following molecule: 1. 2 3 8 Type numbers of all of the el...

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Q: Reaction 1 Reaction 2 ENTHALPY OF REACTION for THREE REACTIONS 1. Mass of solid NaOH(g) 2.035 2. Mas...

A: Your calculation for change in temperature, ∆T (oC) is not right. So let's start calculation from Q....

Q: The n and I quantum numbers plus number of nodes in the following radial solution of the Schroedinge...

A: Quantum numbers are those which tell us location of electron in shell, subshell and orbital. 

Q: 6) Prepare the following carboxylic acid from Benzene and any other reagent that we have discussed s...

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Q: A noble gas has a density of 14.5 g/L at 2.7 atm and 25°C. Identify the gas.

A: Given :  density of gas = 14.5 g/L  temperature = 25°C  pressure = 2.7 atm   To determine :-  identi...

Q: An electrochemical cell involves the following half reactions: Bra(1) + 2e- 28r (aq) E- +1.09 V Fe2*...

A: Br2(l) + Fe(s) ---> 2Br-(aq) + Fe2+(aq)  

Q: What ratio of sodium benzoate, C6H5CO2Na, to benzoic acid, C6H5CO2H, do you need to prepare a buffer...

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Q: (a) Dichloromethane, CH2 Cl2 , is one of the products formed when chloromethane, CH3 Cl1 , reacts wi...

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Q: Mg(s) + 2H2O(l) = Mg(OH)2(aq) + H2(g) What is the concentration of hydroxide ions in the solution f...

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Q: High pressure liquid chromatography (HPLC) is a method used in chemistry and biochemistry to purity ...

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Q: Provide the starting material and reagent to prepare the following product as the exclusive product ...

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Q: Propose an efficient synthesis for the following transformation: The transformation above can be per...

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Q: 3) Aniline (B), shown below, is an organic base used in the manufacture of certain plastics. NH2 a) ...

A: Given,   aniline is represented by B it is given that it is a base.

Q: A solution is prepared by adding 300 mL of 0.500 M NH3 and 100 mL of 0.500 M HCl. Assuming that the ...

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Q: Consider applying biocatalytic reduction with carrots to the following two ketones: tert-butyl methy...

A: 3-hexanone would give higher enantioselectivity when compared tert-butyl methyl ketone Justification...

Q: 12. (a) The equation below shows the reaction of 2-bromopropane with an excess of ammonia. CH3CHBrCH...

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Q: The pressure percentages in Table 10.4 are essentially mole fractions. For example, the mole fractio...

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Q: What is the percent ionization of a 0.68M aqueous solution of HF that is also 0.09 M HCl? The Ka of ...

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Q: How many electrons can be placed in the 5f electron orbitals? 10 14 6.

A: How many electron in 5f orbital ?

Q: Which of the following is not amphoteric? O H3 PO4 OHCO, OHSO OH2O

A: Given,  H3PO4 HCO3-  HSO4-  H2O 

Q: A chemist carefully measures the amount of heat needed to raise the temperature of a 1.59 kg sample ...

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Q: Complete the following table. Round each of your answers to 3 significant digits. energy content whe...

A: Here, we have to convert the energy values into the corresponding units.

Q: rocedure: 1. Place separately in clean test tubes five drops of acetone and acetaldehyde 2. To both...

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Q: Part A Consider the reaction: 2 O3 (9) → 3 02(g) The rate law for this reaction is: What fraction of...

A: Rate depends on ozone and oxygen both 

Q: cal equation (if ne

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Q: In the laboratory a student uses a "coffee cup" calorimeter to determine the specific heat of a meta...

A: Mass of chromium, m1 = 18.5 g Mass of water, m2 = 81.3 g Temperature of chromium, T = 98.04 °C Initi...

Q: The following elimination reaction produces only one stereoisomer of the Zaitsev product and a minor...

A: a. Zaitsev rule : Compound containing good leaving group will follow E2 mechanism and more substitut...

Q: 10) Determine the Ka of a 0.86 M solution of Hydrofluoric acid, HF that is 1.72% ionized at 25 °C. W...

A: Given, Concentration of HF = 0.86 M % ionisation = 1.72 %

Q: Calcium carbonate reacts with hydrochloric acid solution according to the reaction below: CaCO3(s) +...

A: Given :-  CaCO3(s) + HCl(aq) → CaCl2(aq) + H2O(l) + CO2(g)  mass of CaCO3 = 142.2 g  actual yield of...

Q: The equilibrium constant, K, for the following reaction is 6.50×10 3 at 298 K. Calculate Kp for this...

A: We have find out Kp for reaction.

Q: Part C CH3 CH3 N–CH2–CH3 Spell out the full name of the compound.

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Q: What is the pH of a 0.0730 M solution of methylamine (CH₃NH₂, Kb = 4.4 × 10⁻⁴)?

A: Given :- concentration of methylamine solution  = 0.0730 M  Kb for methylamine = 4.4 × 10-4  To calc...

Q: Calculate the volume in milliliters of a 2.4M sodium nitrate solution that contains 125. g of sodium...

A: Given data, Molarity of NaNO3 = 2.4 M                                  = 2.4 mol/ L Mass of NaNO3 = ...

Q: Calculate the equilibrium constant, K, for the following reaction at 25°C: H2O2(1) H20(1) + V202(g) ...

A: H2O2(l) ---> H2O(l) + 1/2(O2)  

Q: How does a reduction reaction in an electrochemical cell cause the current density of a sample to de...

A: Answer - According to the question - Given - Current is very important with electrolysis, because it...

Q: A chemist must prepare 550.0 mL of sodium hydroxide solution with a pH of 12.50 at 25 °C. She will d...

A: PH + POH= 14

Q: What is/are the intermolecular forces that are present between CH4 (methane) molecules? Dipole-dipol...

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Q: which of the following is a base? and why? - KCl -NH3 - HNO3 - CH3OH

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Q: of the following products would require a 2-step reaction for its synthesis?   a Formation of tolue...

A: There occur electrophilic aromatic substitution reaction.  

Q: What is the entropy when 1.35 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: The rate law for: Cl2(g) + CHCl3(g) → HCl(g) + CCl4(g) is rate = k [Cl2]1/2 [CHCl3]3/4  The units...

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Q: For the chemical reaction below, determine the sign of the AS. Reaction Sign of AS (+ or -) H2O(s)>H...

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Analytical Tools

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