What is the mass of 0.75 moles of (NH4)3PO4? O 111.75 g O 121.75 g O 131.75 g 101.75 g

Q: A 50.0 mL solution of 0.179 M KOH is titrated with 0.358 M HCI. Calculate the pH of the solution aft...

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Q: Predict whether or not these substances will mix. Justify your answer. 1. Oil and sugar 2. Salt and ...

A: Given: To predict whether the substances will mix or not.  

Q: For H3PO3, which is actually a diprotic acid, K,1-2.04 x 102 and Ka2-4.56 x 10. Calculate the pH of ...

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Q: Given the following reactions Fe2O3 (s) + 3CO (s) - 2Fe (s) + 3CO2 (g) AH = -28.0 kJ 3Fe (s) + 4CO2 ...

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Q: The standard molar entropy of silver chloride (AgCl) is 96.2 J/(mol*K). What is the entropy of 1.78 ...

A: We have to calculate the entropy of given mass of Silver chloride.  

Q: Plz help with hw Calculate the energy (in kJ/mol) that electrons acquire as a result of being accele...

A: Answer: First of all we have to calculate the charge on 1 mole electrons and then by using the relat...

Q: QUESTION 3 Based on the Hermite polynomials given in Table 11.1, which wavefunction equation below i...

A: The wavefunction equation which is suitable to describe ideal harmonic motion for n= 3 is 

Q: 9. What is the equilibrium constant expression for the reaction below? * 2 NO(g) + 0;(g) → 2 NO:(9) ...

A: We have to predict the correct equilibrium constant expression.  

Q: Which of the following compounds would you expect to be soluble in water? I. AgNO3 II. AgCl II. AgCI...

A: Correct option is ( e) I and III  because both are ionic in nature and hydration energy of solvation...

Q: C For the mechanism step below, draw curved arrows to show electron reorganization. Arrow-pushing In...

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Q: The acid dissociation constant K, of alloxanic acid (HC,H;N,0,) is 2.24 x 10. Calculate the pH of a ...

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Q: 1. State whether solutions at 25 °C with the following species concentrations are acidic, basic or n...

A: The acidic, basic or neutral nature of solution are decided by the pH range of the solution. The pH ...

Q: 1) NANH2 2) benzyl chloride/acetone SH

A: When thiol react with a base, it abstracts the proton and then thiol becomes a very good nucleophile...

Q: Paclitaxel is an anticancer drug isolated from the bark of the Pacific yew tree. Below is the struct...

A: No of hydrogen, SP3, SP2 and SP hybrized carbon in paclitaxel aniti cancer drug

Q: Give an IUPAC name for the compound below. Accepted names for branched alkyl groups are isopropyl, i...

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Q: Give a clear handwritten answer...

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Q: Find the ΔH for this reaction :   3H2(g) +O3(g) --> 3H2O(g) Given the two following pieces of  in...

A: Given- 3H2(g) + O3(g) --> 3H2O(g)  

Q: When 12.0 mL of a 8.77x10-4 M cobalt(II) fluoride solution is combined with 18.0 mL of a 6.35x10-4 M...

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Q: Calculate AH° for the following reaction 3 Fez03(s) + CO(g) → 2 Fe3O4(s) + CO2(g). Species AH°F, kJ/...

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Q: the specific rotation of sucrose is 66.5(°cm^3)/(gdm), what is its molar rotation? Molar mass of suc...

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Q: Courtn 415 Theoretical yield of chemical reactions Gaseous butane (CH,(CH,),CH,) reacts with gaseous...

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Q: 1. How many moles of gas will occupy 112 mL at 0.975 atm and 23.0 °C? 2. If the gas collected in qu...

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Q: Calculate the pH of a solution that is prepared by dissolving 8.98 g LiF in enough water to make 0.4...

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Q: The pentose phosphate pathway produces which of the following needed for biosynthetic pathways? NADP...

A: The correct answer is given below

Q: 4 Fe 3 0, 2 Fe,O3 AS° sys = - 225 J/K + AH° 0.0 0.0 -98.3 kJ/mol What is AS°uniy if AS° sys = - 225 ...

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Q: 1 1-bromobutane will undergo reactions when heated, as shown by Peactio CH;CH2CH,CH,Br l onos Bbtong...

A: Since you have posted question with multiple subparts as per guidelines we can answer three subparts...

Q: 1. Which of the following is the strongest acid? HO, OH а. b. F С. d. Cr e. ON

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Q: How does the solubility of gas change when the solvent is getting colder? (think carbon dioxide in ...

A: We need to predict solubility of gas at low temperature

Q: The formation of magnesium bromide from Mg and Br, is represented in the particle diagram. Which of ...

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Q: Suppose an atom with its nucleus at the origin has an electron in a 2p, orbital. Complete each row o...

A: Atomic orbital :-  The space around the nucleus where the probability of finding the electron is max...

Q: How can we calculate the concentration (molarity) of OH- in a solution that is 0.0859 M NaOH at 25°C...

A: NaOH is strong base which completely dissociate in aqueous solution and forms Na+ ion and OH- ion. F...

Q: Complexes 1. What is the coordination number and oxidation number of the central metal in each of th...

A: The coordination number and oxidation number of the central metal is:

Q: The standard enthalpy of vaporization (H°vap) of ethylenediamine ((NH2CH2)2) is 44.0 kJ/mol. The nor...

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Q: 4 Fe + 30, 2 Fe,O; AS°3ys = - 225 J /K AH® 0.0 0.0 -98.3 kJ/mol What is AS° univ if AS°ys = - 225 J/...

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Q: The base protonation constant K, of azetidine (C;H,NH) is 1.5 × 10-8. Calculate the pH of a 0.31 M s...

A: The pH of the solution can be determined by using ICE table and equilbrium expression for the given ...

Q: NH4 so,2- Ba2+ NO3- A solution of (NH4),SO4 is combined with a solution of Ba(NO3),, as shown in the...

A: The reaction in which both centre atom replaces each other is called as double displacement reaction...

Q: Part A The gas-phase reaction of NO with F2 to form NOF and F has an activation energy of E, - 6.30 ...

A: Given, NO(g) + F2(g) ➝ NOF(g) + F(g) Activation energy (Ea) = 6.30 kJ/mol = 6.30 × 1000 J/mol = 6300...

Q: N2(g) + 2H2(g) = N2H4(g) Enthalpy change

A: Calculate change in enthalpy of the reaction--

Q: Determine the total pressure exerted by a mixture containing two gases if the partial pressure of on...

A: Given that, P1 = 70 atm P2= 30 atm PT= ?

Q: BaCro s) Ba2 + CrO Ksp = 2.10 X 10 10 Caleulate the molar solubility of BaCrO4 in water.

A: Given-> Ksp = 2.10 × 10-10  

Q: Which of these salts are acidic in aqueous solution 1)CsCN 2)NaF 3)NH4I 4)NaCl 5)KI 6)NaBr

A: ->salt which is formed from weak base and strong acid is acidic.  

Q: 12.0 mL of a 0.210 M NaOH solution are required to neutralize 10.0 mL of a sulfuric acid solution wh...

A: Given :-  molarity of NaOH solution = 0.210 M  volume of NaOH solution = 12.0 mL  volume of H2SO4 so...

Q: Number of Molecule valence electrons Formal Charge Electron-Group Geometry Molecular Geometry Resona...

A: The table can be filled using the Lewis structures of the given molecules 

Q: Use the References to access important values if needed for this question. Draw a structural formula...

A: When acid react with base , base can abstract most acidic hydrogen and form H2O .  

Q: = Cr = Na+ = Ca?+ 1 M solution of NaCl (ag) is represented in the particle diagram. Which of the fol...

A: Correct option is (D)

Q: Question 1 The following reaction was monitored as a function of time: AB→A+B A plot of 1/[AB] versu...

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Q: The coefficients in front of H2O and NO in the balanced reaction for acidic conditions are:        ...

A: Reaction:-  Cu(s) + HNO3(aq) → Cu2+(aq) +  NO(g)  

Q: Silver chloride is an antiseptic substance that is used in some bandages and deodorants. Let's say y...

A: Answer: Given reaction between silver nitrate and potassium chloride is shown below: KCl(aq)+AgNO3(a...

Q: Draw the Lewis structure for thiosulfate (S,0,2) with minimized formal changes. How many TOTAL equiv...

A: Given-> Thiosulfate (S2O32-)   

Q: What is the molar solubility of Sn(OH), in a buffer solution containing equal concentrations of NH, ...

A: 1.) To calculate solubility of Sn(OH)2 in buffer solution , we would first calculate pOH if buffer s...

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.