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Find the mass of urea

  1. the concentration of urea in a solution prepared by dissolving 16g of urea in 39 g of H2O is ________% by mass. The molar mass
    1. answers icon 3 answers
    2. jen asked by jen
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  2. Find the mass of urea needed to prepare 51.7 of a solution in water in which the mole fraction of urea is 7.80×10−2.
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    2. amy asked by amy
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  3. Find the mass of urea needed to prepare 50.1 of a solution in water in which the mole fraction of urea is 7.50×10−2.
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    2. Kelley asked by Kelley
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  4. Find the mass of urea (CH4N2O) needed to prepare 50.9 g of a solution in water in which the mole fraction of urea is
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    2. Nicole asked by Nicole
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  5. Find the mass of urea needed to prepare 51.7 g of a solution in water in which the mole fraction of urea is 7.59×10−2. anyone
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    2. jazz asked by jazz
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  6. If a 8.0mL sample of blood plasma has a mass of 8.223g and contains 1.233g of urea, what is the mass/mass percent concentration
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    2. Elaine asked by Elaine
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  7. How many grams of Urea would you have to dissolve in 500ml of H2O in order for the mass percent of H2O to be 88.8%? What is the
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    2. regina asked by regina
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  8. Given the two substances Sodium Nitrate (NaNO3) and Urea ([NO2]2CO), why is it that urea has a lower boiling point? I thought
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    2. Vic asked by Vic
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  9. The concentration of urea (CH4N2O) in a sample of urine is 8.8number of significant figures. Note: Reference the SI prefixes
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    2. views icon 79 views
  10. The concentration of urea (CH4N2O) in a sample of urine is 8.8number of significant figures. Note: Reference the SI prefixes
    1. answers icon 1 answer
    2. views icon 90 views