1. What is a spectrophotometer used for in a cobalt chloride solution analysis?

Q: Which of the following graphs describes the relationship between the pH of a buffer and the volume o...

A: Correct option : D) Explanation: Buffer solution means weak acid and weak acid is partially ionized,...

Q: The breaking buffer that we use this week contains 10mM Tris, pH 8.0, 150mM NaCl. The elution buffer...

A:

Q: A novel compound named “sanaoline” with a partition coefficient (KD) of 6 was extracted from 5.0 gra...

A: Formula for partition coefficient w  = W[KD V/(KDV +v)]n Where w is reaming amount of sanaoline = ?...

Q: How can reactions be determined? Select one: O a. Exothermic reactions occur always rapidly. O b. Re...

A:                           Answer  Reaction can be determined :-  Reaction can be determined by the e...

Q: express in four decimal places. How much heat is required to convert 40.0 g of ice at -10.0 oC to 1...

A: Thermodynamics is branch of chemistry in which we deal with heat of reaction gained or lost to syste...

Q: Excess of Cu(s) is added to 2.00M solution of Cr3+(aq). Given that: Cr2+(aq) + Cu+ (aq)  Cu (s) + Cr...

A: Given:  Concentration of Cr+3 = 2.00 M  Kc = 7.20   

Q: bianks Answer: a grams of Fe b. reaction -1 attachment Given the reaction: 2 Fe + 3 0, → Fe,O, + 3 C...

A: For the reaction., 2Fe + 3O2 ---> Fe2O3 + 3CO The amount of heat energy absorbed when two mole of...

Q: Determine the [H*] of the following substances such vinegar, pH=2.65. Hint: [H*] = 10-PH %3D

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Q: How do you use a ICE chart to determine the pH of vinegar? Ka of acetic acid = 1.8*10^-5

A:

Q: 1. A gas expands against a variable opposing pressure given by p=10/V atm; where V is the volume of ...

A: Given,  P = 10/V  ∆U = 100 cal        = (100x4.184) J        = 418.4 J  V1 = 10 L  V2 = 100 L 

Q: Perform the conversions between energy units. 588 kJ = J 3425 kcal = kJ 8.97 x 106 J = kcal FEB 23

A:

Q: what is the CFU per

A: Y=mx+c where Y is absorbance and X is the concentration and C is intercept made by line on the absor...

Q: 49. The resistance to the addition reactions involved in unsaturation tests indicate the extra stabi...

A: Bromine test tells about the presence of unsaturated bonds which can be double bonds or triple bonds...

Q: Help me pls

A: The products are as follows:  

Q: 1. Discuss the chemical basis of the positive and negative results of the chemical tests performed i...

A: Oils become rancid.

Q: 20. What is the best method used to separate the components of the mixture of benzene, toluene, and ...

A:

Q: What mass of lead iodide is in 1 ml of a 0.5 M solution in DMF? Enter your answer (in g) to 3 decima...

A: We know that, Molarity = (No of mole of solute) / (Volume of solution ) No of mole = (Molarity) x (v...

Q: Determine the differences in pH when a strong base is used to titrate a strong acid and a weak acid....

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Q: Assuming a pair of of half-reaction below takes place in an acidic solution, write a balanced equati...

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Q: 10. Metal-Alkyne complexes (COCL(PPH3),-III(CF3)) - Reactivity compared to olefins (Ni(C,H)3) - Outl...

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Q: b) Provide a stepwise mechanism for the bromination of nitrobenzene.

A: -NO2 is a electron withdrawing group,it pull electron from ortho and para position by resonance and ...

Q: Problems Write the formulas for the components in each reaction and, using the smallest whole number...

A: In a balanced reaction, all atoms of all elements must be equal on both sides. 

Q: If you start with 150 g of Fe2O3 as the limiting reagent, what is the theoretical yield of Fe? (b) I...

A: Carbon monoxide (CO) reduces ferric oxide to iron.  The calculation shown below.

Q: Submit Question 17 of 40 The compound shown here is classified as what type of organic compound? ||

A: Alkanes can be defined as the organic compounds containing only carbon- carbon and carbon- hydrogen ...

Q: Draw the structural condensed formula for 1-chlorohexan-3-one.

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Q: Give the mechanism for the formation of all E1 products

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Q: 9. How many molecules are in 5 moles of water? How many molecules are in 20 moles of 02? How many ap...

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Q: The equilibrium constant of the reaction 2 X (g) = Y (g) + Z(g) is found to fit the expression lnK =...

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Q: Identify the compound with an acetal functional group. II CH3 HO, II IV HO OH A) I B) I C) II D) IV

A: Given compounds are,   

Q: Consider the following graph of the kinetic energy distribution among molecules at temperature- numb...

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Q: If a reaction has the experimental rate law, Rate=k[A]2 explain what happens to the rate when a) Wh...

A: The reaction rate depends on the concentration of reactants. 

Q: Express the quantity in the unit indicated and designate whether this heat is gained or lost by the ...

A:

Q: A chemist prepares a solution of iron(III) bromide (FeBr3 ) by measuring out 7.19μmol of iron(III) b...

A: Concentration =  no of molesvolume (L) 

Q: The mass of HgBr2 precipitated when 15.00 mL of 0.337 M Hg(NO3)2 solution is added to excess KBr sol...

A: Given, Concentration of Hg(NO3)2 solution = 0.337 M = 0.337 mol/L Volume of Hg(NO3)2 solution = 15.0...

Q: Match the relational phrases to the corresponding concepts. Zwitterion Isoelectric Titration point C...

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Q: In which molecule is sp? hybrid orbitals used? а. CН4 b. SF6 e. C2H4 d. HCN e. AsCl3

A:

Q: To raise the temperature of aluminum which has a mass of 200 grams from 298 K to 348 K, 8400 joules ...

A: specific heat of aluminum, c= 840  J/kg.K

Q: :01 Il

A: Given,  Product=>  

Q: Water and chloroform has a partition coefficient of 5.00. A 50.00mL sample of a 8M aqueous solution ...

A: The distribution constant or the equilibrium constant, K is called the partition coefficient which i...

Q: Find the solubility of AgCl in pure water, 0.10M KNO3, and 0.10M NaCl

A:   AgCl is sparingly soluble salt , its solublity in absence of common ion " S  " mol/L , in presence...

Q: 5) Discuss the sources of error in your experiment. 6) List three practical applications of MgO and ...

A: 1,2,3 and 4 is correct. 5. Sources of error  a. At the time of measuring weight , fault in digital d...

Q: (c) Nitrobenzene will undergo electrophilic aromatic substitution at meta position, but not at the o...

A:

Q: write molecular equation for the following precipitation reaction. Copper(II) chloride and sodium su...

A: CuCl2 and Na2S are dissolved in water. So, they represented as (aq). Molecular equation is    CuCl2 ...

Q: 2. The rate constant for a first order reaction, SO,CI, → SO, +Cl, at 600 K is 2.2 x 10 s. What perc...

A: First-order reaction: The rate of the first-order reaction depends only on one reactant. According t...

Q: How much heat is required to convert 40.0 g of ice at -10.0 oC to 100.00 oC? The specific heat of ic...

A:

Q: a solution has a concentration of OH- =4.0x10-5 M. what are the concentration of H3O+ and the pH of ...

A: pH of a solution can be defined as negative of logarithm of concentration of hydronium ions 

Q: Explain how bacteria are being detected using an electrochemical sensor.

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Q: Identify the compound with a hemiacetal functional group. II CH3 HO II IV HO HO A) I B) || C) II D) ...

A: In multiple questions we solve only one question according to Bartleby Guidelines. Functional group ...

Q: Fill in the blank. Precipitation, volatilization, and particulation are all types of a. Electrochemi...

A: Gravimetric analysis is a technique in which the analyte ( component to be estimated )is first conve...

Q: What color will be produced if cyclohexene and toluene are reacted with sulfuric acid?

A: Alkane doesn't react with sulphuric acid or inert to concentrated sulphuric acid. If I take into con...