[OH-] = 4.2 x 10-2 Express the concentration to two significant figures and include the appropriate units. HÁ ? [H3O*] = Value Units

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Q: [OH1 Acid/Base 3.51 x 10 4.74 x 103 3.98 x 10 10

A: 1.     [H+]                 [OH- ]                  acid/base 3.51×10-8        2.85×10-5…

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Q: 189 mL of a 1.9 M solution of KBr is diluted to 668 mL. What is the new concentration of the…

A: Answer 8 :-  New concentration of solution = 0.537 M

Q: [OH-] = 5.0 × 10–2 Express the concentration to two significant figures and include the appropriate…

A: Consider the given information is as follows; OH-=5.0×10-2H3O+ = ?Acidic, basic or neutral = ?…

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Q: 1. a) 5.62g of LIOH is dissolved and made up to the mark in a 500.00ml flask. Calculate the molarity…

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Q: Mass of Erlenmeyer flask: 25.52 g Mass of Erlenmeyer Flask + Calcium Hydroxide Solution (lime…

A: Mass of Ca(OH) 2 = 2.92 g Density of Ca(OH) 2= 1 g/ml As we know        Density = mass/ volume We…

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Q: 1) What is the concentration in g/mL and g/L of a solution made up of 28g KBr in 88 mL of solution?…

A: Here we are required to find the concentration of Kbr solution in g/ml and g/L units

Q: How many grams of NaOH would you need to make 3,243 mL of a 7 M NaOH solution (m.w. = 40.00 g/mol)?…

A: Given, volume = 3243 ml = 3.243 L Molarity = 7 M  Molar mass of NaOH = 40.00 g/mol

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Q: Find the milliliters of 0.250M KOH needed to neutralize 115.0 mL of 0.834 M H,PO,. Write and balance…

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A: Molarity = moles/volume  means it must have same no. Of moles to be the same molar concentration

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A: Given,  Convert 5 feet 7 inches to millimeter = ?

Q: The quotient of 12.987g divided by 20.0cm^3

A: Given,12.987 g divided by 20.0 cm3

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Q: Calculate the concentration of NH3, NH4+ and OH- in a solution

A: number of moles = mass/molar mass  molar mass of NH3 = 17g/mol

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A: From the moles of sodium chloride we can calculate the concentration of sodium chloride.

Q: .600 M NaCi aqueous SC www 0.997 g / cm3

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Q: 168 mL of a 1.6 M solution of acetic acid, CH3CO2H, (molar mass 60.05) is diluted to 224 mL.…

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Q: 1) 1 eq HCI ? 2) 1 eq HBr Br CI Br CI Br CI Br CI Br Br CI I II III IV V %3I

A: Given reaction is :    Predict the major product of the reaction = ? Options are :

Q: Calculate the molarity of a solution made by adding 54.1 g of NaNO3 to a flask and dissolving with…

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Q: JOH1 Acid/Base 3.45 x 105 3.64 x 1012 1.24 x 10 3 2.57 x 109

A: ★ [H+] = 3.45 × 10-5  pH = - log (3.45 × 10-5) = 4.46  So, It is acid. [OH-] = 10-14/3.45 × 10-5 =…

Q: A sample of concentrated hydrochloric acid (HCl) is 37.0 % HCl by mass. Calculate the molarity of…

A: Given:37.0% HCl by mass density is 1.18 g/ml formula : Molarity (M)= (% by mass x 10 x Density…

Q: Five standard solutions of HBr are prepared by serial dilution in which, at each stage, 10.00 mL are…

A: Five standard solutions of HBr are prepared by serial dilution in which, at each stage, 10.00 mL are…

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A: Given: Volume of bottle = 600 mL Volume of acetic acid = 30.0 mL

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A: To change 1:2 dilution to a 1:10, we have to dilute solution by a factor of 5.

Q: 0.010 M CaCl2 (Ksp 4.68 x 10-6 for Ca(OH)2) Express your answer In molarity to two significant…

A: Chemical equation:-  Ca(OH)2 = Ca2+ + 2OH-

Q: On their third titration trial, the CHM 111 student used 18.80 mL of 0.205 M NaOH(aq) to neutralize…

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Q: If 1.5 g of potassium dichromate (K2Cr2O7) is used to prepare a standard solution in a 250 mL…

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Q: Part A Pure acetic acid (HC,H3O2) is a liquid and is known as glacial acetic acid. Calculate the…

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Q: If acetic acid is the only acid that vinegar contains (K. = 1.8 x 10 '), calculate the initial…

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Q: What was the concentration of the HClHCl solution?

A: The reaction between HCl and Na2CO3 is as follows,

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Q: If you are going to dilute 125 mL of 1.50 M AgNO3 solution so that the final volume is 215 mL, what…

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A: Given :-  Molarity of Hg2O solution = 0.0191 M or 0.0191 mol/L  Mass of Hg2O = 2.27 g  To calculate…