1. A certain first-order reaction involving a single reactant, A, begins with a concentration of 5.00 M. After a time of 244 seconds, the concentration of A is 3.25 M. What is the value of the rate constant, k, with units?

Q: Directions: Complete the following blanks below with the appropriate data. Base your answers on the ...

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Q: Chromatography 1. External Standard Method A. Calculate the regression equation and the R-squared ...

A: Since you have asked multiple questions, we will solve the first question for you. If you want any s...

Q: Activity 4. It's Solving Time! Directions: Solve the following problem. Write your complete solution...

A: A buffer solution is formed by the mixing of weak acid with its conjugate base or vice versa. The pH...

Q: need (Theoretical yield

A: Solution: Acetyl salicylic acid experience it is one of the antipyretic agent in most of the aspirin...

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Q: A 0.5043 g of unknown acid was titrated with 27.35 mL of 0.5645 N NaOH solution. Calculate the equiv...

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Q: 19) What is the final product of the following Hofmann degradation reaction? What is the structure a...

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Q: (4) Describe the synthesis of plastic especially polyethylene, 1,1- dichloroethane, and polyvinyl ch...

A: Answer - According to the question - Synthetic plastic is made by a reaction known as polymerisation...

Q: Shown in the image is a diagram for the voltaic cell with the overall cell reaction being Al + Pb2+ ...

A: In the given cell Al electrode is anode because oxidation of Al is taking place while Pb electrode i...

Q: Boron is difficult to obtain in its pure form because of its: (a) high meltir point. (b) very corros...

A: Metals are the electropositive elements.

Q: Which of these mixtures represents a shift in the reverse direction? Select all apply

A: Here  Reaction takes place in which equilibrium is established. 

Q: Stoichiometry

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Q: Question 20 of 25 View Policies Current Attempt in Progress Propose an efficient synthesis for the f...

A: This is a multi step synthesis reaction . Detail mechanistic pathway is given below by which we can ...

Q: Q2. A. Compound Which is composed of 57.14 % C, 6.16% H, 9.52% N, 27.18% O by mass and has a molar m...

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Q: The advantage of using Helium in decorative and weather balloons over that of Hydrogen is it is chea...

A: The given problem is based on Periodic properties of element .,

Q: 5. Methane gas (CH4) reacts with oxygen gas (02) according to the quation below. This reaction relea...

A: CH4 + 2O2----> CO2 + 2H2O + energy 

Q: which is dehydrated fastest and which slowest und

A: R-OH +H+>>>>R+  +H2O    hence dehydration of alchohal is prapotional to stability of car...

Q: Calculate the pH when 60.0 mL of 0.200 M HBr is mixed with 30.0 mL of 0.400 M CHNH2 (Kb = 4.4 x 10-4...

A: The PH can be calculated as follows

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Q: Calculate the pH of 0.0500 M aqueous solution of Methylamine.

A: Concentration of a solution can be measured in terms of molarity, molality and normality. 

Q: Chlorine gas used for disinfection combines with water to form hypochlorous acid (HOCI). The HOCI io...

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Q: QUESTION 8 Which of the following spectroscopic measurements is not consistent with cyclohexanecarba...

A: Mass spectra and decarboxylation:   As per our guideline we have to answer first question only.

Q: blood buffer system is shown below.  When additional base is added which component in the equation b...

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Q: conversions

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Q: Refer to the solubility curve below. Which compound below is the least soluble at 10°C?(refer to the...

A: Saturated solution is the solution in which no more solute can be dissolved at the same temperature....

Q: The activation energy for the gas phase decomposition of dinitrogen pentoxide is 103 kJ. N2052 NO2 +...

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Q: Above 882 oC, titanium has a BCC crystal structure, with a = 0.332 nm. Below this temperature, titan...

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Q: molar

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Q: 8. Assume that the following exchangeable cations are present in a 25 gram sample of a soil Cation С...

A: Given 25g of soil contains  K+ = 0.234 g                     = 0.234 / 39.1 mole = 5.98 x 10-3 mol  ...

Q: At temperature, the 'H NMR of all-cis-1,2,3,4,5,6- room spectrum cyclohexanehexacarboxylic acid exhi...

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Q: Which of the following compounds are organic? Check all that apply. SO2 O Cu(NH3 )6 Cl2 OC6H120 CH3F...

A: Identify the organic compound ?

Q: 1. Balance the equation: - Cl; + KOH KCI + KCIO, + H;o 2. The chemical name for Ag:CrOs 3. How many ...

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Q: 15. A NAOH(aq) solution and an acid-base indicator are used to determine the molarity of an HCI(ag) ...

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Q: In a salt that exhibits an exothermic reaction upon dissolution, increasing the temperature will   i...

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Q: If a 305.4 gram mass of copper that is initially at 24 degrees C is given 1,234 Joules of energy, wh...

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Q: 1. Balance the equation: - Cl: + KOH KCI + KCIO; + H;o 2. The chemical name for Ag:CrOs 3. How many ...

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Q: Br2 CH2 H20

A: ->first of all there is formation of cyclo bromonium ion which can be broken  by H2O.  

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A: Flash  point is the most minimal temperature at which a compound can disintegrate to shape an ignita...

Q: the concentrations of all substances present in the equilibrium mixture, if 2.35 mol of H2 and 2.35 ...

A: Given- Moles of H2 =2.35mol Moles of I2=2.35 mole  Volume= 10 .0L Moles of HI= 3.76 mol         

Q: Which ether cannot be prepared via a Williamson ether synthesis? OA di-1-naphthyl ether OR 15-crown-...

A: Williamson ether synthesis is an SN2 reaction between an organohalide and an alkoxide to form a ethe...

Q: entropy

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Q: Rank the nucleophilicity of the 3 bases: Na2CO3, K2cO3, NaOH

A: Nucleophilicity is determined by the ability of bases to lose electrons  Now we know tha NaOH is a s...

Q: QUESTION 7 The formula for dinitrogen tetroxide is N

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Q: Write a balanced nuclear equation for the alpha decay of Aluminum written below.   28 Al       →  ...

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Q: Why are the cyanates and sulfonates not as toxic as the other compounds of cyanide?

A: Cyanide is the CN-particle, and as a harm it is generally controlled as one of the three mixtures di...

Q: An experiment was carried out to determine the order of reaction between one of the isomers of C3H7C...

A: Rate law expression for the given reaction will be Rate = k[C3H7Cl]m[OH-]n where k is the reaction c...

Q: The following are some normal modes of vibration for several molecules. In each case: • Determine th...

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Q: For a particular isomer of C, H,8, the combustion reaction produces 5108.7 kJ of heat per mole of C,...

A: Given data : 

Q: Which of the following clements has a radioactive isotope that is most commonly used in treating can...

A: 1) correct option is 2) Co   , cobalt -60 is used in treating cancer. 2) correct option is 2) Platin...