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4.62 ml c2h5OH ( m = 46.07 g/mol and density = 0.789g/mol) is combusted in the presence of 15.55g of o2 and 3.72 g of h2o . determine the precentage yeild c2h5oh10 + 3o2 = 2co2 + 3h2o
This reaction has a CO2 percent yield of 62.3% What will be the mass of CO2 EXPERIMENTALLY obtained when 44.5g O2 and 24.6g C2H5OH are reacted? Molar masses: C2H5OH...
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Wine is approximately 12% ethanol by volume. ethanol has a molar mass of 46.06 g/mol and a density of 0.789g/ml. How many moles of ethanol are present in a 750 ml of wine?
The volume of ethanol in 750 ml of wine is: 750 x 0.12 = 90 mlDensity = mass/volumeMass = density x volumeMass of pure ethanol = 0.789 x 90 =...
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If 20.0mL of 0.400M NaCl is added to 80.0mL of 0.900M NaCl. What is the resulting concentration of the NaCl?
Concentration of the NaCl=7.9M
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calculate the pH of the solution formed by mixing 10.0ml of 0.15M HBr with 20.0ml of 0.25M HCl
concentration of [H+] (from HBr and HCl) n(H+) = 0.15*10/1000 + 0.25*20/1000=0,0065 mol in 30 ml x mol in 1000 ml x=0.217 [H+]=0.217M
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Calculate the Qsp for the mixing of 30.0mL of 3.7 × 10^-3 M Sr(NO3)2 and 25.0mL of 0.02 M Na2SO4
Qsp of SrSO4 = Concentration of Sr2+ × Concentration of SO42- .= ( 30 × 3.7 × 10-6 ) / 55 × 10-3 × ( 25 × 0.02 ×...
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Calculate the pH of the solution that results when mixing 20.0ml of 0.1750M HCl with 25.0ml of a_distilled water b_0.132M NaOH c_0.132M NH3 d_0.232M NaOH
a) pH = -lg [H + ] C M = n/V n (HCl) = 0.1750 · 20.0 = 3.5 mmol C M (HCl) = 3.5 / 45.0 = 0.08 M...
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What is the mass, in grams, of 30.0mL of the liquid propylene glycol, with a density of 1.036g/mL at 25 degrees Celsius?
m= pV = 1.036 * 30 = 30.08 g
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Ethanol has a density of 0.789g/mL. What is the mass in mg of 15 gallons of ethanol?
1 gallon= 3.785 L for US or the imperial gallon 1 gallon= 4.54609 L V=15 gallons×3.785 = 56.775 L=56.775×〖10〗^3 ml m=ρ×V=0.789 g/ml×56.775×〖10〗^3 ml≅44.795〖×10〗^3 g=44.795〖×10〗^6 mg Answer Ethanol’s mass must be...
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if it takes 80.0ml of 1.500 M KOH to neutralize120.0ml of given H3PO4 solution, what is the molarity of this phosphoric acid solution?
The molarity is 0.33 M.The equation is:3KOH + H3PO4 → K3PO4 + 3H2OThe number of moles of KOH = 1.5mol/L*0.08L = 0.12 molFrom the equation the number of moles of...
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