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Calculate 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
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    2. jen asked by jen
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  2. 1.00 tonne of ammonium from the harber process is reacted with carbon dioxide to prepare the fertiliser urea and 1.35 tonnes of
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    2. ellie smith asked by ellie smith
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  3. A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this
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    2. CC asked by CC
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  4. A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this
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    2. cc asked by cc
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  5. A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this
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    2. cc asked by cc
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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. Calculate the mass of urea required in making 2.5kg of 0.25 molar aqueous solution? which formula should I use mass by volume
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    2. Gash asked by Gash
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  8. 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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  9. 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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  10. 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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