why do we need spindle cide in viscometer ?

Q: Describe the preparation of a. 2.00 L of 0.120 M HCIO4 from the commercial reagent [60% HCIO4 (w/w),…

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Q: What is the standard enthalpy (in KJ) of formation for this reaction: SO2(g) + O2 (g) → SO3(g) Hint…

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Q: Calculating reaction entropy using the standard molar entropies.. Using the thermodynamic…

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Q: 16.) What is the pressure exerted by 34.06 g of ammonia at 25°C and 250 mL if it behaves as a van…

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Q: The Wohl degradation is a series of reactions that shorten an aldose chain by one carbon, it is…

A: Given : We have to make product for given reaction.

Q: 2) Given the thermodynamic data of ethanol below, calculate the change in entropy of 55.5 g of solid…

A: GIVEN:-

Q: Given the reduction potentials below: Reduction Half-Reaction E° (V)   Reduction Half-Reaction…

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Q: Calculate the activation energy and frequency factor for the decomposition reaction, based on the…

A: we are required  to find the activation energy Ea and frequency factor A  for the decomposition…

Q: 1. For the following complexes, give the oxidation state and d electron count, a. b. the valence…

A: The oxidation state, d electron count, the valence electron count, the valence electron count and…

Q: Problem 6. Calculate pH and pOH of 0.02 M H2SO4 solution. Kw = 1 × 1014 at 25°C.

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Q: a The first four steps in the radioactive decay sequence of Bi-214 are a, B, B, a. To write the…

A: Identify the symbol , mass number and atomic number after radioactive decay ----

Q: Find the standard cell potential for an electrochemical cell with the following cell reaction. Hg2+…

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Q: What do you call the stage of the titration in which the number of moles of the titrant is the same…

A: Answer: In the titration analyte is the unknown whose concentration or any other data we have to…

Q: [References] a. Cu-67 decays by beta decay. What are the atomic symbol and mass number of the…

A: Given,  a. Cu-67 decays by beta decay.  b. F-18 decays by positron emission. c. Sn-111 decays by…

Q: Equilibrium: 7. Write the equilibrium expression, K, for the following reactions: 2NH, (g) + CO, (g)…

A: Since you have posted with multiple questions, as per guidelines we will solve only the first…

Q: 1.a) How would you decrease the partition coefficient of a formulation ( Include example)? b) What…

A: a)K(partition coefficient) can be lowered by changing the temperature at which the vial is…

Q: An oxidizing agent will Select one: a. lose electrons b. increase in oxidation number c. increase…

A: Oxidizing agents are those compounds that oxidize other compounds present in solution and itself…

Q: A researcher employed at Phenomenal Phenols, Inc. has been asked by her supervisor, O. H. Gruppa, to…

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Q: 0.848g of Na2B4O7.10H2O into a crucible. After hearing the sample for a short time and allowing the…

A: Na2B4O7.10H2O is known as borax.It is a hydrated crystal having 10molecules of water of…

Q: solution is made by mixing 0.250 L of 0.020 mol L-1 acetic acid and 1.10 g of potassium acetate (M =…

A: Here a solution contains 0.25 L of 0.02M acetic acid and 1.10 g of CH3COOK. Ka CH3COOH =1.8×10-5 .…

Q: What is the balanced equation describing the autoionization of water at any temperature and give the…

A: A question based on stoichiometry that is to be accomplished.

Q: Find the normalization constant, N, for the antibonding orbital wave function formed from the…

A: In the question it is given to find out the normalisation constant,N.Let's find according to our…

Q: The molar absorptivity constant of a particular chemical is 3.9 dm3 mol–1 cm–1 . What is the…

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Q: An electrochemical cell was set up at 298K. One half-cell has a solid platinum electrode in a…

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Q: One form of the Nernst equation at about 298K is E = E° - (0.0592/n) log Q Suppose you mixed 2.0 mL…

A: *Here first we determine the chloride conconcentration in the anode electrode by applying limiting…

Q: 1. Find the pH of 0.0500M CH¿CICOOH (a weak acid) where Ka=1.4 x 103

A: The PH of chloroacetic acid(CH2ClCOOH) can be calculated as follows

Q: What is the standard enthalpy (in KJ) of formation for this reaction: CH (g) + O2(g) → CO2(g) +…

A: Given,  CH4(g) + O2(g) ---------> CO2(g) + H2O(l)  ∆H°CO2(g) = - 393.5 kJ/mol  ∆H°H2O(l) = -…

Q: mitted 130 120 110 100 90 80 70 60 50 • Stable Radioactive 40 30 20 10 10 20 30 40 50 60 70 80 90…

A: N/Z is the ratio of no of neutrons to no of protons of an atom. It signifies which atoms will…

Q: Which molecule(s) contain(s) ketone functional group? a. CH3 OH H. 0=C осн OH CH3 C. CH3 OH O none…

A: Anwer of the question given below,

Q: 6. Iron coated with zinc to prevent corrosion is known as iron. a) protected b) cathode iron cast d)…

A: The answer is given below

Q: Identify the intermolecular forces present in the following substances. 4) Methane, CH⁴

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Q: What are the pH and pOH of a solution of 2.0 M HI, which ionizes completely?

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Q: 4. determine the amount in mg of the amount of Ag present from ICP mass digested: 1.0821g/L dilution…

A: Inductively coupled plasma mass spectrometry, commonly known as ICP-MS, is one type of spectrometry…

Q: A solution with a known concentration equal to 3.4 mM gave an absorbance reading of 0.820 in a…

A: Solution - Absorbance (A), also known as optical density (OD), is the quantity of light absorbed by…

Q: & stick + labels cis isomer trans isomer cis-trans isomerism not possible >

A: The cis-tans isomerization is a type of stereoisomerism. The molecule which contains a double bond…

Q: Calculate AH° for the following reaction, after it is properly balanced with smallest whole-number…

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Q: Concentration of hydrochloric acid (M) 2.11 Concentration of sodium hydroxide (M) 2.05 Calorimeter…

A:

Q: Element Atomic Number: 1 Name: Hydrogen Symbol: Atomic Number: O 'H O 2H Isotope Atomic Mass:…

A: Deuterium, H12 has 1 proton and 1 neutron.

Q: What mass of NaOH(s) must be added to 1.0 L of 0.072 M NH3 to ensure that the percent ionization of…

A: Given,  Concentration of NH3, [NH3] = 0.072 M

Q: All ionic compounds dissolve in water.  True  False

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Q: 34. Which of the following statements about salicylic acid is true? A. has no solubility in the…

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Q: ionic compound

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Q: 1. H20(g) + CH3Brg) + CH3OH(g) + HBrg) 2. 2 H2(g) + O2g) → 2 H2O) 3. H2(2) + 1/2 O2(g) H2O) 4. H21)…

A: Enthalpy of formation: When one mole of the substance is formed by its constituent elements in its…

Q: rgoes a decay. WH еса

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Q: A sample of gas occupies a volume of 73.8 mL. As it expands, it does 122.5 J of work on its…

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Q: I need specific description of the compounds involved in the synthesis (functional groups, specific…

A: We have to explain each step of the given synthesis reaction.

Q: A 101.3 mL sample of 0.090 M HCl is mixed with 41.0 mL of 0.090 M NH3.  What is the resulting pH?…

A: Given that

Q: How many kilojoules of energy are generated when in 91.4 grams of NO(g) reacts according to the…

A: The balanced chemical equation is,       2 NO(g)  +   O2(g)  -----> 2 NO2(g)     First we need to…

Q: 5. Titration of the I2 produced from 0.1142 g of primary-standard KIO3 required 27.95 mL of sodium…

A: Given: Mass of KIO3 = 0.1142 g Volume of Na2S2O3 = 27.95 mL Molar mass of I2 = 254 g/mol Molar…

Q: What is the relationship between: (S)-alanine and (R)-alanine?  (2S,3S)-2-amino-3-methylpentanoic…

A: Enantiomers are stereo isomers that are non superimposable mirror images to each other.…