What piece of equipment should you use in order to obtain the mass of the weighing form? A Top-loading balance B Analytical balance Triple beam balance (D) Double beam balance

Q: ViS2 (s) = Vi** (aq) + 2S²-(aq) K. = 3.64 x 10-8 What is the concentration of Vi*(aq) in a solution ...

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Q: BFR #5 - Chapter 9 and 18 - Thermodynamics Exercise 18.36 Enhanced - with Feedback and Hints Without...

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Q: The % w/w of F- in a 0.2144-g sample was determined by Volhard titration. After adding 50.00 mL of 0...

A: Ans.   There are two precipitates in this analysis: AgNO3 and I– form a precipitate of AgI, and AgNO...

Q: Proper attire in the lab includes O a. sandals O b. short sleeves O c. none of these. Od.shorts

A: Proper attire in the lab includes : 

Q: A 0.8382 g sample of an organic compound was burned in a stream of oxygen, and the carbon dioxide pr...

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Q: What is the major product obtained from the following reactien? Br 1) Mg, ether 2) CO2, ether 3) H30...

A: synthesis of grignard reagent  attack of grignard reagent as nucleophile  hydrolysis leading to the ...

Q: E Module 12 HW Chapter 21 - Selected Exercises Question 5 of 8 0.33/1 Starting with diethyl malonate...

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Q: What is the Ksp expression for the following reaction? Bi2S3(s) ⇄ 2 Bi3+(aq) + 3 S2−(aq) Group of ...

A:   A SOLID cannot express a concentration, and thus the expression simplifies to  Ksp = [Bi3+]2[S2−]3

Q: Enter your answer in the provided box. A sheet of gold weighing 10.0 g and at a temperature of 16.4°...

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Q: HO F HO,

A: IUPAC naming have following rules:-  Longest chain having maximum number of carbon atoms is the par...

Q: Often used as an indicator in acid-base titrations. O bromocresol green O bromothymol blue O methyl ...

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Q: Q2 At 291 K, the equivalent conductivities at infinite dilution of HCI, NaCl and CH3COONA are 369.3,...

A: First we will calculate equivalent conductivity at infinite dilution of CH3COOH. Using degree of dis...

Q: A piece of dry ice (solid carbon dioxide) with a mass of 25.0 g sublimes (converts from solid to gas...

A: Mass of carbon dioxide = 25.0 g  

Q: The decomposition of N2O4 into NO2 is carried out in a sealed container at 25o                      ...

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Q: s) +2C1,(g) – SnCI,0) AHin = -511.3 kJ/mol -2.45 Incorrect (g) + C,(g) → 2 HCI(g) AHin = -184.6 kJ/m...

A: As we know, for a chemical reaction,  □H = □E + □ngRT/1000 Where ,  □ng = change in gaseous moles R ...

Q: direction: assign oxidation numbers to each of the atoms in the equation and determine if the reacti...

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Q: 3. Predict which one is more stable (i.e., has the larger dissociation energy) and explain your answ...

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Q: он 1. HCI 2. NaHCO3 Starting material Theoretical _ 7.81 g 74.12 g/mol 0.781 g/mL 105.34 mmol mass c...

A: As we've given, mass of tert-butyl chloride = 6.421g. We know molecule weight of tert-butyl chloride...

Q: Nitrosyl bromide, NOBr, can be formed from the reaction of NO and Br2:         NO(g)  +  ½ Br2(g)   ...

A: We have to predict the Kc for given reaction.  

Q: The protein content of the unknown samples were determined using BSA as standard. The absorbance val...

A: Given data for standard:

Q: 20.0 g of sodium acetate (CH3COONa) to 500 mL of a 0.150 M acetic acid (CH3COOH) solution. Determin...

A: Given,  pKa of acid = 4.74 Mass of Salt = 20.0 g Molar mass of Salt = 82 g/mol Moles of Salt = mass/...

Q: For a first-order reaction, which expression describes the relationship between the rate constant, k...

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Q: Current Attempt in Progress Examine the following reaction. 3 CO 2(8) + 2 Fe(s) = Fe 203(s) +3 CO(8)...

A: Here we are required to find the equilibrium expression for the given equilibrium reaction.

Q: A buffer solution was prepared by mixing 25 mL of 0.05M KCN with 25.0 mL of 0.05M HCN. To the soluti...

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Q: What is the best choice of reagents to perform the following reaction? CH3 COOH NaOH, H20, heat O H2...

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Q: CH3 O2N. NO2 ZON NO2

A: The given compound is Trinitro toluene ( TNT) 

Q: What is the pH of a buffer made from 0.580 mol of CH₃NH₂ (Kb = 4.4 × 10⁻⁴) and 0.100 mol of CH₃NH₃I?

A: Given- Moles of CH3NH2=0.580mol Moles of CH3NH3I=0.100mol Kb=4.4×10-4

Q: 9. The % w/w of I- in a 0.2144-g sample was determined by Volhard titration. After adding 50.00 mL o...

A: A kind of back titration method which is used for the identification and determination of concentrat...

Q: A student has a bad cut, what can you give to help them? O a. eye irritant O b. first aid kit Oc. ev...

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Q: Consider the reaction: N23) + 3H2(g) → 2NH3(g) Suppose that a particular moment during the reaction,...

A: We have to predict the rate of N2 reacting.  

Q: A sample of an unknown gas is found to have a density of 1.97 g/L at a pressure of 0.762 atm and a t...

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Q: Based on the table you completed above, decide whether the low solubility of KHT at room temperature...

A: KHT (potassium hydrogen tartrate) is a salt of very strong base KOH and weak acid tartaric acid.  

Q: The pH of a 0.67M solution of alloxanic acid (HC,H,N,0,) is measured to be 3.41. Calculate the acid ...

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Q: The equilibrium for a particular chemical reaction is dependent on the O a. atmospheric pressure. O ...

A: Equilibrium constant is the the ratio of rate of forward to the rate of backward reaction

Q: The greater the molar heat of vaporization of a liquid, the greater its vapor pressure. Is this true...

A: We are authorised to solve only one question at a time. Please post rest of the questions separately...

Q: The chiral hydroxyl compound P, C7H14O contains a five-membered ring and shows positive result in io...

A: This question is related to finding out the structures of unknown compounds involving specific type ...

Q: A0.55 M solution of HX, a weak acid, is made. a) Write the reaction of the acid in water and identif...

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Q: The half-life for the first-order conversion of A to B is 56.5 hours. How long does it take for the ...

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Q: Complete the following table. Mass of Sample Moles of Sample Molecules in Sample Total Atoms in Samp...

A: The question is based on mole concept The formula used and solution is given in the picture

Q: Rank the acids below in order of increasing acidity (start from least acidic to more acidic). HO. HO...

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Q: 3. (77, 87, 133) The complete combustion of ethanol is performed according to the reaction given bel...

A: Since you have multiple questions we will answer the first three subparts of the first question one ...

Q: Determine the change in entropy (ASsys), for the expansion of 0.600 mole of an ideal gas from 2.00 L...

A: Moles of ideal gas (n) = 0.600 mol Intial volume (V1) = 2.00 L Final volume (V2) = 3.00 L

Q: direction: assign oxidation numbers to each of the atoms in the equation and determine if the reacti...

A: Check the oxidation number for each atom on both side and determine if the given reaction is redox r...

Q: The work done to compress a gas is 74 J. As a result, 26 J of heat is given off to the surroundings....

A: Given ; energy added by work = 74 J              Energy given to surrounding = 26 J

Q: A sample of argon gas collected at a pressure of 1.33 atm and a temperature of 293 K is found to occ...

A: Answer: (1) Given Pressure P= 1.33 atm, Initial volume V = 590 mL = 0.590 L temperature T = 293 K R ...

Q: For a first-order parallel reaction, the Arrhenius factor for formation of two products are 20000 an...

A: Answer: This question is based on Arrhenius equation which is shown below: k=Ae-EaRT Here: k=rate co...

Q: The average concentration of sodium ion and sulfate ion in sea water are 1.15ppm and 250ppm respecti...

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