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Chemistry involving conversions

  1. Aug 28, 2009 #1
    1. The problem statement, all variables and given/known data

    The total volume of seawater is 1.5 10^21 L. Assume that seawater contains 3.1 percent sodium chloride by mass and that its density is 1.03 g/mL. Calculate the total mass of sodium chloride in kilograms and in tons. (1 ton = 2000 lb; 1 lb = 453.6 g)

    2. Relevant equations

    D=m/v
    m=d x v


    3. The attempt at a solution

    1.5 x 10^21 x .031= 61324931.65 g/L

    61324931.65x .001=61324.93165kg ?
     
  2. jcsd
  3. Aug 28, 2009 #2

    symbolipoint

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    You want mass of seawater first. Use the density of seawater and the volume of seawater to obtain the mass of seawater.

    The first step which YOU showed gives the wrong units. Look at the units involved there: Liters x mass/mass
     
  4. Aug 30, 2009 #3
    Hi
    Your method is right .Only one conversion is wrong 1Kg = 1000g
    1L = 1000ml
    density =1.03 g/mL = 1.03 Kg /L
    you can use it straight here
     
    Last edited by a moderator: Aug 31, 2009
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