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A stock standard of urea

A stock standard of urea nitrogen contains 20 mg/mL of urea nitrogen. How much stock is needed to prepare 100 mL of a 20 mg/dL
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2. asked by Anonymous
3. 532 views
no idea how to do this...describe how you would prepare from the specified stock solution: 400 mL of 0.45 M urea starting with a
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2. asked by katie
3. 395 views
describe how you would prepare from the specified stock solution: 400 mL of 0.45 M urea starting with a 6 M urea stock solution
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2. asked by luv2swim
3. 390 views
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. asked by Vic
3. 1,117 views
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. asked by ellie smith
3. 835 views
what are the physical properties and chemical properties of ammonium cyanate?Go to www.chemfinder.com and search this chemical.
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2. asked by Danielle Stacey
3. 932 views
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. asked by jen
3. 3,038 views
The average stock prices for companies making up the S&P 500 is k30 and the standard deviation is k8.2. Assume the stock prices
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Urea (CH4N20 ) is a common fertilizer that can be synthesizedby the reaction of ammonia (NH3) with carbon dioxide: In an
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2. asked by Audrey
3. 401 views
Analyzing a Stock. The beta, B of a stock represents the relative risk of a stock compared with a market basket of stocks, such
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2. asked by Rony
3. 648 views