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5 January, 05:26

How many milliliters of a 8.50 M LiCl solution contain 45.8 g of LiCl?

Express your answer with the appropriate units.

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Answers (2)
  1. 5 January, 05:47
    0
    127 mL is the volume for the 45.8 g of LiCl

    Explanation:

    Molarity of solution: 8.50 M

    We know, from this data that 8.50 moles of solute (LiCl), are in 1L of solution

    Let's find out the volume for the 45.8 g of LiCl, by a rule of three.

    We convert the mass to moles, before: 45.8 g. 1mol / 42.39g = 1.08 moles

    Therefore:

    8.50 moles of LiCl are found in 1L of solution

    Our 1.08 moles will be found in (1.08 mol. 1L) / 8.50 mol = 0.127 L

    We can convert the volume from L to mL: 0.127L. 1000 mL/1L = 127mL
  2. 5 January, 05:49
    0
    The 8.50M LiCl solution contains 127 mL of LiCl

    Explanation:

    Step 1: Data given

    Concentration of the LiCl solution = 8.50 M

    Mass of LiCl = 45.8 grams

    Molar mass of LiCl = 42.39 g/mol

    Step 2: Calculate moles of LiCl

    Moles LiCl = mass LiCl / molar mass LiCl

    Moles LiCl = 45.8 grams / 42.39 g/mol

    Moles LiCl = 1.08 moles

    Step 3: Calculate volume of the LiCl solution

    Molarity = moles / volume

    Volume = moles / molarity

    Volume LiCl solution = 1.08 moles / 8.50 M

    Volume LiCl solution = 0.127 L

    Step 4: Convert volume from L to mL

    0.127 L = 0.127 * 10³ mL = 127 mL

    The 8.50M LiCl solution contains 127 mL of LiCl
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