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  1. 36.5% by weight means there are 36.5 g HCl for every 100 g of solution. 36.5 g is 1 mole, while 100 g /1.200 g/ml = 83.33 mL 1 mole / 0.08333 L = 12 M concentrated solution To make 100 mL of 2 M HCl, use this equation...

    1 Answers · Science & Mathematics · 13/08/2010

  2. pH = -log(concentration of H+) for pH to be 2, the concentration of H+ ions must be 0.01mol/L so the moles of HNO3 is n = cV n = 0.01 x 0.05 n = 0.0005 mol if you add water, the volume increases, the moles stays the...

    2 Answers · Science & Mathematics · 06/11/2010

  3. mass of NH3 required: (0.250 mol/L) (0.5 L) = x / 17.0 g/mol x = 2.125 g mass of 28% NH3 that contains 2.125 g: 2.125 is to y as 28 is to 100 y = 7.589286 g volume of 7.589286 g of 28% solution: 7.589286 g divided by 0.890 g/mL = 8.53 g...

    2 Answers · Science & Mathematics · 19/11/2013

  4. NaBr = 102.9 g/mol 3.8 g / 102.9g/mol = 0.0369 mol NaBr 0.29 = 0.0369 / L 0.29(L) = 0.0369 L = 0.127 L 0.127 x 1000 = 127 mL

    2 Answers · Science & Mathematics · 28/05/2009

  5. Balanced equation : 3Ba(OH)2 + 2H3PO4 → Ba3(PO4)2 + 6H2O 3mol Ba(OH)2 reacts with 2 mol H3PO4 Mol Ba(OH)2 in 75mL of 0.006M solution = 75/1000*0.006 = 4.5*10^-4mol...

    2 Answers · Science & Mathematics · 07/05/2015

  6. 60.0 ml You want the quantity of OH- to equal the quantity of H+. Thus: x ml * 1.50 M = 15.0 ml * 6.0 M

    2 Answers · Science & Mathematics · 11/04/2007

  7. The 72.0% HNO3 is a mass/mass %. We must convert it to mass/volume using the density (= specific gravity) and then molarity. (72.0 g HNO3 / 100 g solution) x (1.42 g solution / mL) = 1.02 g HNO3 / mL (1.02 g HNO3 / mL) x (1000 mL...

    4 Answers · Science & Mathematics · 15/04/2011

  8. form a balanced equation of the reaction. NaOH + HCl --------> NaCl + H2O 20 mL HCl = 0.02 dm^3 HCl (or) 0.02 L HCl in 0.02 dm^3 HCl, no of moles of HCl = molarity x volume = 0.104 x 0.02 = 2.08 x 10^-3 mol...

    3 Answers · Science & Mathematics · 16/05/2010

  9. There are two possible answers depending on the solute and solvent and if the ppm represents by volume or by weight By weight 100 ppm =(approx) 100 mg/L 100 mg/L (0.1L) = 10 mg of solute By volume 100 ppm = 100 uL/L...

    1 Answers · Science & Mathematics · 20/03/2010

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