2. a) How is the mass of one mole of a substance determined? b) How do you determine the number of moles of a substance used in an experiment?

Q: Which two species act as the acids in the following reaction? HF CH3CO0 2F+CH3COOH OA CH3COO, F¯ O B...

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Q: Radioactive phosphorus-32 decays with a half-life of 14.0 days. A chemist obtains a fresh sample of ...

A: We have to calculate the number of days chemist have to do the experiment.  

Q: Phosphoric acid (H3PO4) can be prepared from phosphorous triiodide (PI3) according to the reaction: ...

A: Given reaction is : PI3 (s) + H2O(l) → H3PO4 (aq) + HI(g)  Mass of PI3 (s) = 15 g  Volume of H2O = 2...

Q: Aluminum hydroxide can be dissolved in hydrochloric acid to form aluminum chloride and water. Write ...

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Q: In the hot gases of an automotive engine's cylinders, temperatures may exceed 1142 K (degrees kelvin...

A: the "root mean square" or "rms" velocity of the hydrogen atom is given below

Q: Order the following sets of five atoms and ions according to increasing size: ("1" smallest and "5"...

A: The given anions and cations are - - >  F- , H- , Be2+ , Li+  , Cl-   When an atom looses its ele...

Q: 3. Will the following reaction occur spontaneously at 298K if [Fe 2*] = 0.60M and [Cd 2*] = 0.010M? ...

A: Given reaction is :  Cd (s) + Fe2+ (aq) <-----------> Cd2+ (aq) + Fe (s)  [Fe2+] = 0.60 M  [Cd...

Q: 3 To balance the reaction AlG) + Z" caq)→ A13+ Ca) and write it. s written Als) + A12* Cag)→Z H* Caq...

A: Complete solution is given below in next step 

Q: Calcium crystallizes in a face-centered cubic lattice. The radius of calcium is 196 pm. What is the ...

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Q: action with the following potential energy diagram were catalyzed, the e Reaction Coordinate

A: A potential energy diagram represents the change in potential energy of a system in the process of c...

Q: Which one of the following statements about solid Cu (face-centered cubic unit cell) is incorrect? O...

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Q: stion 11 Determine the molar concentration of a Ca(OH)2 solution whose pOH is 1.51 at 25.0 C. (the a...

A: 1 mole of caoh2 produced 2 mole of OH- ions

Q: H2 (g) + 12 (g) 2 HI (g) Initially, 3.7 atm each of hydrogen gas and iodine gas are added to a steel...

A: at equilibrium  the value of HI is given from this we can calculate the value of  x or change. so fu...

Q: Principle involved in the HYDROLYTIC REACTIONS:   Hydrolysis of esters Fast reaction Hydrolysis of ...

A: The hydrolysis  means ,reaction  with water  or addition  of water.  The ester on hydrolysis  gives ...

Q: What is the mass in grams of 1.37 x 10^24 atoms of nickel? ______ grams How many nickel atoms are ...

A: Calculate mass and number of atoms of Nickel in the given data in the question---  Value--  Avogadro...

Q: The pH of an aqueous KOH solution is 12.38. What is the hydrogen ion concentration of this solution?

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Q: 0.8102 g sample of impure Al2(CO3)3 (MM= 234 g/mol) decomposed with HCl; the liberated CO2 was colle...

A: Mass of impure sample = 0.8102 g  Mass of CaCO3 = 0.0515 g  Molar mass of CaCO3 = 100 g/mol

Q: Rank the following acids in order of DECREASING acid strength Acid Ka I. HIO3 1.7e-1 II. HC3H503 6.4...

A: pKa is a negative log of acid dissociation constant(Ka). The mathematical expression is pKa = -log K...

Q: What are the mass and charge balance equations for 0.20 M Ba(OH)2?

A: Given,  Compound = Ba(OH)2  Concentration of Ba(OH)2 = 0.20 M What are the mass and charge balance e...

Q: Given the following proposed mechanism, predict the rate law for the overall reaction: 2 NO2 + Cl2 →...

A: Elementary reactions are those which occur in one step and in case of elementary reaction the order ...

Q: For a given pure metal which of the following cubic unit cells would result in the highest metal den...

A: Complete solution is given below in next step

Q: Which of the following is the conjugate acid of H2PO4 ? OA HPO42- O B. HPO4 ОС НЗРО4 ODPO43-

A: Conjugate acid is the chemical species which formed when a base accept a proton.

Q: Calculate AH

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Q: 4- Give structures of the Grignard reagent and the aldehyde react to yield each of the following alc...

A: structures of the Grignard reagent and the aldehyde or ketone that would react to yield the followin...

Q: which has higher boiling point? H2o or C8h18

A: Which has higher boiling point H2O or C8H18 is given below with explanation.

Q: How many milliliters of a 100 mg/ml e Sig. As directed. How many milliliters of a 100 mg/m ph concen...

A: Given :-  If a pharmacist fortified 10g of a 0.1% w/w tacrolimus (PROTOPIC) ointment by adding 12.5 ...

Q: Nitrogen dioxide decomposes according to the reaction! 2 NO2(g) = 2 NO(g) + O2(g) where Kp = 4.48 x ...

A: The partial pressure is the pressure the gas if the gas were in the same volume and temperature by i...

Q: Given the following proposed mechanism, predict the rate law for the overall reaction: 2 NO2 + Cl2 s...

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Q: 23. Place the reagents below in the correct order necessary to accomplish the transformation shown i...

A: In the given reaction the ethylbenzene is converted into propiophenone.

Q: For Questions la to 1d, refer to the equilibrium given below in which all reactants and products are...

A: Given reaction--- CH4(g) + H2O(g) <------> CH3OH(g) + H2(g) + heat  Heat on the right side rep...

Q: Cd is a heavy metal that leaches at a rate of approximately 0.0012 milligram/liter per year. Conside...

A: This question is better solved by using dimensional analysis concept. It is given that  rate of leac...

Q: 4.17 Phosgene is a highly toxic gas that has been used as a chem- ical weapon at times in the past. ...

A:

Q: K for the reaction: 2 SO2(9) + O2(g) = 2 SO3(g) If initial concentrations are [SO2] = 0.20 M, [O2] =...

A: Answer) We have given equilibrium constant (Kc) and we also have concentration of each substance . S...

Q: Calculate the percent ionization for bromic acid in a solution that contains 0.00850 M acetic acid a...

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Q: How many milliliters of water should be added to 100 mL of a 1:125 w/v solution to make a solution s...

A: As per bartleyby guidelines i answered only first question so please don't mind and post other quest...

Q: The equilibrium constant, Kp, is 33.2 at 1000 K for the following reaction: XY2(g) + XZ2(g) = 2 XYZ(...

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Q: Aqueous solutions copper (II) sulphate and sodium sulphide are mixed. A solid forms. a. Write a mole...

A: Handwritten complete solution is provided in Step 2.

Q: The number of nearest-neighbor atoms of an atom is called its O a. sequence number O b. system numbe...

A: In a crystal lattice structure, an atom is surrounded by a definite number of neighboring atoms.

Q: Br2 (9) Initialy, 3.4 atm each of bromine gas and chlorine gas are added to a steel cylinder and the...

A: Answer:-              Given initially pressure of Br2 and Cl2                  are 3.4 atm and at eq...

Q: The pH of a 0.38M solution of alloxanic acid (HC,H,N,0,) is measured to be 3.53. Calculate the acid ...

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Q: How many atoms are there in a body-centered cubic unit cell of rubidium? а. 4 b. 8 О с. 1 d. 6 Ое. 2

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Q: Use the correct key term to complete each of the following sentences. is a type of reaction in which...

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Q: The metal rubidium crystallizes in a body-centered cubic lattice. If the radius of rubidium is 248 p...

A: The relation between edge length (a) and radius of atom (r) for BCC lattice i √(3a) = 4r .

Q: True or false?   The valence electronic configuration of arsenic is 4s24p5 The electronic configu...

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Q: Why do almost no bubbles form inside the bottle of carbonated soda (ex. Sprite) when adequately subm...

A: We know that  solubility is inversely proportional to temperature. this means if  temperature is hig...

Q: 8. How would you describe the solution of the salt formed from the reaction of a weak acid and a str...

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

Q: (4 blanks) An ice-making machine operates in a Carnot cycle. It takes heat from water at 0.0 °C and ...

A:  The Carnot engine estimates the maximum efficiency any heat engine can obtain.   Given m=85.0 kg L=...

Q: One mechanism for the destruction of ozone in the upper atmosphere is O3 (9) + NO(9) → NO,(g) + O2 (...

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Q: Calcium crystallizes in a face-centered cubic lattice. The radius of calcium is 196 pm. What is the ...

A: Ca crystallizes in FCC lattice.The radius of Ca is 196 pm.We have to calculate the edge length of th...

Q: gas in the ratio 1:3 by volume is heated at a temperature of 450-5000C and 200-900 atmospheric press...

A: Rate of this reaction is -d[N2]/dt=-(1/3)d[H2]/dt=(1/2)d[NH3]/dt Reactant is decreases with time so ...

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.