Formic acid (HCHO) has a K, 1.8 x 104, What is fractional composition (a) of formic acid in solution if the pH = 3,00? %3D O 0.00055 O 0.85 >0.99 0.15 Q8 ect Question 8 An unidentified polyprotic acid H,A" has pKa1 3.60 and Ka- 7.30, what is the predominant species in solution at pH = 4.57

Q: Be sure to answer all parts. Caleulate the molecular mass or formula mass (in amu) of each of the fo...

A: Molecular mass - The sum of the atomic masses of all atoms in a molecule. 

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A: Here we have to write the major product formed in the following given reactions.  

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A:   Balanced chemical equation is  2 B5H9 + 12 O2  -->  5 B2O3 + 9 H2O    Heat of reaction is  ∆Hrx...

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Q: Consider the problem below: (Equation 1) 4 AICI3 (5) + 2 Al(s) + 3 Cl2(g) - 3 Al,Cla(g) AH = -1051 k...

A: 6Al(s) + 9Cl2(g) ---> 3Al2Cl6(g)   

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A: In the given question standard free energy change of different species are given and one needs to de...

Q: QUESTION: How much solute (lauric acid) do you need to add to the solvent wax (stearic acid) to make...

A: Suppose, x g of lauric acid is required to mix with the solvent wax stearic acid to make a 100 g can...

Q: A HCN – NaCN solution has a pOH of 8. The HCN concentration is 0.2F. Find the concentration of the N...

A: Consider the given information is as follows; pOH = 8 Ka of HCN = 4×10-10 Concentration of HCN = 0.2...

Q: Consider the following reaction and the tabulated thermochemical data at 298 K. 4 NH32) + 5 O2g) → 6...

A: Answer: This question is based on the relationship between Gibbs free energy change, standard Gibbs ...

Q: Pentaborane B5H9(s) burns vigorously in 02 to give B203(s) and H200). Calculate AHpxn for the combus...

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Q: 1. Use condensed structural formulas to write the equation for the formation of methyl acetate. 2. A...

A: An alcohol and an acid condenses  in acidic or basic condition to produce an ester . Most of the est...

Q: How large volume should be measured from a 37wt, 1.185 g/cm^3 density solution?

A:

Q: Can you identify constitutional isomers of CH3Cl or of CH2Cl2. If you can, draw them. Solve it asap

A: Constitutional isomer is one types of isomer in which compound having same molecular formula, but in...

Q: The reaction bctween hydruzinc (N,H) and dinitrogen tetroxide (N,O,) in thocir liquid forms s used t...

A: Calculating ∆H°   ∆H° = enthalpy of reaction at STP  ∆H° = Σenthalpies of product - Σenthalpies of r...

Q: Be sure to answer all parts. Heating copper(II) oxide at 400°C does not produce any appreciable amou...

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A: Ferrochromium alloy is a combination of two metals iron and chromium. In aluminothermic process, the...

Q: Properties of alkanes, alkenes and alkynes

A: The correct answer is given below

Q: Which reaction(s) afford pentylamine in high yield and minimal side products 1. NaN3 A Br 2. LİAIH4 ...

A: We have to tell among the given reaction which are pentylamine is high yield.  

Q: 1. Chemical potential energy is found in the. between atoms and is transformed into energy during ch...

A: Specific heat of Fe = 0.451 J/g degC Specific heat of Pb = 0.129 J/g degC

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A: Length of speaker wire = 325 cm

Q: what intermolecular forces between the interaction of A475 and S19

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Q: Select the single best answer. Which of the following has more atoms: 3.70 g of helium atoms or 18.7...

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Q: Clikk in the ansner bes to activate the palette. Halance the equation representing the reaction hetw...

A: Answer: Balancing of a chemical reaction is based on concept of conservation of mass and for that at...

Q: Place an asterisk by each stereocenter in the molecules depicted below. Note that if this were an ex...

A: Stereocentre is the particular carbon centre in which groups are attached that orient in different d...

Q: Match Cations and Colors of Precipitate: Colors:  Green Gel   Blue Gel   Brown Gel    White Gel Ca...

A: The matching of the following is:  

Q: Be sune to answer all parts Calcalate the leralar ms or ferle ef cah of e fll (a) CH

A: Molecular mass- The sum of the atomic masses of all atoms in a molecule

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Q: What is the mass of 4.50 x 1044 Cu atoms?

A: Given :- number of Cu atoms = 4.50 × 1022 atoms  To calculate :- mass of Cu (in g)

Q: 3HF + Al(OH)3 à AlF3 + 3H2O 240 g of hydrogen fluoride react with 156 g of aluminum hydroxide to for...

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Q: Select the single best auswer. Which of the following has more atoms: 4.08 g of hydrogen atoms or 18...

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Q: How much heat (k.) is evolved when 4.50 g of Fe2O3 is reacted with excess carbon monoxide using the ...

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Q: HO. НО + CH3 H2 н С. °C + H CH3 H2 HO C. N. °C ОН ÓH noradrenaline adrenaline AH? -3182 kJ/mol -246 ...

A:

Q: Be sure to amer all parts. Heating copper(l) exide at 400°C dees met produce any appreciable amount ...

A: The answer is as follows:  

Q: Calculate the standard enthalpy change for the reaction 2C8H18() + 1702(g)- 16CO(g) + 18H20(). Given...

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Q: Fes04(9) + 4 H2(G) 1. Consider the following chemical equation. 3 Fe(s) + 4 H2O(9) a. How many moles...

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

Q: Why should we study the strength of acids and bases in Chemistry?

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Q: 3. Calculate the pH of the following: 500 ml of pure water 10.0 ml. of 0,3 F hydrochloric acid added...

A: Here we have to find pH of 500 ml of pure water and pH after adding 10 ml of 0.3F hydrochloric acid ...

Q: Given the following data: N2(g) + O2(g) → 2NO(g) ΔH = +180.6 kJ 2CO2(g) + N2(g) → 2CO(g) + 2NO(g) Δ...

A: According to Hess Law, if a chemical reaction can be expressed as the sum of two or more chemical re...

Q: Find the number of moles of the indicated element a) 9.75 g of B2O3 b) 187.2 mg of Na2B4O7 . 10H2O c...

A: Given data is as follows: (a) The mass B2O3 given = 9.75 g The moles of substance can be calculated ...

Q: we Can treat methane (CH4) as an ideal gas at temperatures above its boiling point of -161. °C. Supp...

A: T1 = -24.0°C = -24.0 + 273 = 249K T2 = 18.0°C = 18.0 + 273 = 291K  P1= 6.2 atm Volume increased = 35...

Q: 1. PCC HO 2. Methylamine (CH,NH2) and NABH;CN 3. NaNO, / HCI ? NO NO ON NEN N. CH3 N. CH3 CH3 CH3 B ...

A: Given is organic reaction.   

Q: n the thermochemical equation 2502la) + Ozlal – 2503lal. AHnen -198 kJimol, how much heat is evolved...

A: Molar mass SO2 is 64.066

Q: If the molar solubility of MnCO3 is 2.1l × 10-0 M at a certain temperature, what is the Kgp for the ...

A:

Q: What is the pH after 0.150 mol of HCl is added to the buffer from Part A? Assume no volume change on...

A: When acid is added the concentration of HA increases and concentration of salt decreases. 

Q: 2. Aqueous magnesium hydroxide reacts with aqueous hydrocyanic acid to produce aqueous magnesium cya...

A:   Arrhenius acid-base theory:  The substance which increase H+ ion concentration in the solution is...

Q: 1ow. 1. Chemical potential energy is found in the between atoms and is transformed into energy durin...

A: * For answering o table is not available.

Q: according to the equation below. 6CO.(g) + 6H,0(1) C,H,O,G) + 60,(8) Substance CO.lg) H,O() CH,Odls)...

A: