Question 33 The most convenient way of expressing the random error, regardless of the concentration or weight of the analyte measured A Variance B Range Relative Standard Deviation Pooled Standard Deviation

Q: The analysis of a compound gives the following percent composition by mass: C: 57.28 percent; H: 9.3...

A: Let the mass of compound = 100 gram Therefore., Molar Mass of Carbon = 57.28 gram Mass of Hydrogen =...

Q: 4 5.00 5.00 4.00 6.00 6. 3.00 7.00

A: “Since you have posted a question with multiple sub-parts, we will solve first three sub- parts for ...

Q: What is the IR of this compound ? with clear peaks

A: Infrared spectroscopy (IR) falls under the infrared region of electromagnetic spectrum and used to i...

Q: What is the shape of OXEF4

A: A molecule is given is XeOF4. We have to tell its shape. We know that hybridization is  H = Number o...

Q: • Part A ithium bromide and lead() acetate Express your answer as a chemical equation. Identify all ...

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Q: A plot of Gibbs Energy against the extent of reaction has been constructed. Which point in the graph...

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Q: General Problems 3-48 For each of the following compounds, draw an isomer that has the same function...

A: The compounds given are,    

Q: Observer (a) Observer (b) CI, Observer (c) (d) Observer (e) (f) Observer Observer Br

A: Newman projection visualizes the conformation of a chemical bond of alkane from front to back, with ...

Q: For the formation of 1 mol of nitrosyl chloride at a given temperature, AH= -44- NO(g) + 1/2 Cl2(g) ...

A: For any reaction  A -----> B Eaf = x KJ/mol ∆H = y KJ/mol If we reverse the above reaction then a...

Q: Question 3 Given the dissociation constants for each deprotonation, what is the dissociation constan...

A: In order to get the overall equation, the two chemical equations are added together. On addition of ...

Q: What is the cell potential for the following reaction at 25 °C? Ni(s) + Cu2+(0.010 M) – Ni2+(0.0010 ...

A: Concept : A cell is formed by combination of two half cell reactions.  Two reactions are carried out...

Q: Question 9 Which kind of solvents are suitable for experiments involving spectroscopic analyses? A T...

A: The Correct answer of the given question : Ques - Which kind of solvents are suitable for experiment...

Q: behind the paper, eral Problems For each of the following compounds, draw an isomer that has the sam...

A:   Isomerism :  The compounds which are having same molecular formula but differ in their properties ...

Q: Using the necessary inorganic reagents, propose the synthesis for 2,5-diphenylfuran from benzene and...

A: Here we to synthesize 2,5-diphenylfuran from starting material benzene and succinic acid.

Q: a) CH3-CH2 CH2-CH3 b) CH3 -CH2-CH=CH-CH2-CH3

A: Step1- first identify the longest carbon chain.  Step2- start numbering from that side such that sen...

Q: 8. Fill in the following table: pH [H;O"] pOH [OH'] ACID or BASE 1.97 9.84 x 10-2 M 4.68 2.64 x 10-5...

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Q: If a reaction is zero-order in a reactant, when the concentration of the reactant is decreased by a ...

A: Given that, Reaction is zero order, Then,  

Q: Which of the following factors affects the equilibrium of reversible reactions involving gas? O conc...

A: Equilibrium Reactions: The chemical reactions that can come back to the original path in which it ha...

Q: I. Directions: Draw the lewis structures of the neutral atom and the ion of each element. Determine ...

A: Lewis structure is the representation of molecules or atoms with valance electron

Q: Which of the following describes an electrolytic cell? The energy is transformed from chemical to el...

A:                                     Answer An electrolytic cell electrical energy convert into chemi...

Q: Name one example or type of colloids that is used in or found in Agricultural system and briefly dis...

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Q: Which of the following statements is true? A Liquids can be weighed using a weighing paper. B In wei...

A: Find out the true sentence from given four sentence and explain why it is correct while others are n...

Q: Calculate the number of moles required to make 150 mL of a 5.5M solution of CuSO4. For all answers  ...

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Q: Which of the following equilibria would not be affected by pressure changes at constant temperature?...

A: Answer: Pressure of any system of given volume at constant temperature is always directly proportion...

Q: The molar heats of fusion and vaporization of ethanol are 7.61 and 26.0 kJ/mol, respectively. Calcul...

A:   Given Data : Molar heats of fusion ethanol ,                  Q 1   = 7.61 kJ /mol Molar heat vapo...

Q: At 2000 °C, N2(g) + O2(g) - 2 NO(g); Kc = 4.10 x 104 What is Kp for this reaction?

A: The relationship between Kp and Kc is given by the relation ;   Kp = Kc (RT)∆ng. ∆ng = stoichiometry...

Q: Indicate the strongest force holding the crystals together in the following substances by putting a ...

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Q: What types of intermolecular forces are occurring between sodium dodecyl sulfate and water ?

A: sodium dodecyl sulfate structure is  CH3(CH2)11OSO3- Na+  

Q: Question 2 The molar conductivity at infinite dilution of hydrobromic acid, sodium acetate, & sodium...

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Q: Question 9 What is the cell potential for the following reaction at 25 *C? Ni(s) + Cu2*(0.010 M) – N...

A: This question is related to electrochemistry. Electrochemistry is branch of chemistry in which we de...

Q: What is the mass in grams of 1.20 × 1014 lead (Pb) atoms? X 10 Enter your answer in scientific notat...

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Q: Question 18 The cell notation for the Galvanic cell is Cd(s)/Ca2*2(s)/" The Standard Reduction Poten...

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Q: The density of silver is 10.5 g/cm3. A piece of silver that occupies a volume of 23.6 cm3 would have...

A: Density of silver = 10.5 g/cm3  Volume of silver = 23.6 cm3  Mass of silver = ? 

Q: How many ions of Al are present in 1 mole of Al2S3

A: Given that, 1 mole of Al2S3. We have to calculate the number of Al ions present in it. We know that ...

Q: (SPM10-29] Which equations represent double decomposition reactions that form a precipitate? Na So. ...

A: Given reactions are : I. CuSO4 + Na2CO3 -------> CuCO3 + Na2SO4  II. CuSO4 + Mg(NO3)2 ------->...

Q: Which of the following factors affects the equilibrium of reversible reactions involving gas?     ...

A: To identify: The factors that affect the equilibrium of reversible reactions involving gas.  

Q: A sample of that contains 200 molecules contains carbon atoms. A 22.5-g sample of ammonium carbonate...

A: Since you have posted multiple questions as per guidelines we can solve only one per session . Since...

Q: At 100°c and 2 bar pressure, the degree of dissociation of phosgene is 6.30 x 105. Calculate the equ...

A: The reaction given is, => Given: Degree of dissociation = 6.30 × 10-5  Temperature = 100 oC And ...

Q: Consider the reaction: BaSO4    Ba2+ + SO42-; Ksp = 1.1 x 10-10 .What is ΔG° at 25 °

A: Using the relationship between Gibbs free energy and equilibrium constant,  □G° = -RT×ln(Ksp) T = 25...

Q: all temperatures?     ΔHrxn 0     ΔHrxn > 0; ΔSrxn 0; ΔSrxn > 0     ΔHrxn < 0; ΔSrxn < 0

A: For Spontaneous process,  □G = negative,  Using Gibbs equation,  □G = □H - T□S, So, if process is Sp...

Q: Calculate the 90% confidence limit for the mean of the data assuming that only information about the...

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Q: Which of the following statement/s is/are TRUE?  The Arrhenius Theory cannot be applied to account ...

A: 1) The Arrhenius Theory cannot be applied to account for the behavior of the molar conductivity of s...

Q: At 2000 °C, N2(g) + O2(g) + 2 NO(g); Kc = 4.10 x 10-4 What is Kp for this reaction? 7.75 O 2.17 x 10...

A: For the reaction., N2(g) + O2(g) -----&gt; 2NO(g)  Temperature = 2000°C  Kc = 4.10 × 10-4 We have to...

Q: Other things being equal, the margin of error of a confidence interval increases as A the confidence...

A: The margin of error, also known as the confidence interval, indicates how closely your survey result...

Q: For the gas phase isomerization of cis-1,2-diphenylethene, cis-CGHSCH=CHC,Hstrans-C6H5CH=CHC6H5 the ...

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Q: mol of B to yield at equilibrium 2 mol of Y?

A: From ICE table    A B Y Z I a 3 0 0 C -x -x +x +x E a-x 3-x x x           Now, As Y is...

Q: please answer both

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Q: The standard cell potential for the reaction at 298.15 K: Fe (s) + Zn2* (aq) = Fe2* (aq) + Zn (s) is...

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Q: A rock is placed on a balance and its mass is determined to be 20.140 g. When thesame rock is placed...

A: • The values provided in the question are:-  i) Mass of a rock, m = 20.140 g  ii) Initial volume of ...

Q: What is the purpose of the salt bridge in an electrochemical cell?     To serve as a physical boun...

A: Electrochemical cell: An electrochemical cell is a device capable of either generating electrical en...