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Urea, NH2CONH2, is manufactured from ammonia as well as carbon dioxide according to the following equation
2 NH3 (g) +CO2 (g) ->NH2CONH2(aq)+H2O (l)
Explain what volume of ammonia gas at 25oC and 1.5atm is needed to make 500 g of urea?
Define when this solution was separated from pure water by a semi permeable membrane, the resulting osmotic pressure supported a column of water 157mm in height. Explain what is the molecular mass of chymotrypsinogen
an empty vial weights 55.32 g.a if the vial weights 185.56 g when filled with liquid mercury d13.53 gcm3 what is its
The orbital energy of any atomic species depends on factors other than the principle quantum number n and any given energy level in H is more stable than the same level in H+.
pervaporation is the process that is used to make ethanol in nearly pure form from a feed with ninety percent c2h5oh
Calculate the pH of 100. mL of 0.28 M NH3 before and after the addition of 4.5 g of NH4NO3, and account for the change. Assume that the volume remains constant. What is the pH before and after the addition of NH4NO3
completely neutralize 50.00 ml of a weak monoprotic acid, HA. when 32.64 ml of NaOH are added to another 50.00 ml of the acid, the pH reading was 4.80. Calculate Ka for the acid using the partial neutralization method.
A 25.0-ml sample of potassium chloride solution was found to have a mass of 25.115 g. When the solution was heated to dryness, the mass of the solute residue was 0.252 g. Calculate the mass/mass percentage concentration and molar concentration.
the normal boiling point of benzene is 80.1 c celsius and the heat of vaporization is hvap 30.7 kjmole. what is the
a reaction has an activation energy of 195 kjmol. when the temperature is increased from 200 c to 220 c the rate
a metal sulfide, M2(CO3)3, has a Ksp of 4.15 x 10^-42. What is the molar solubility of this sulfide in water? Assume the sulfide dissolves ideally (ignore hydrolysis effects).
A weak acid (HA) is found to ionize 17.8% when mixed at a concentration of 0.3 mol/L. What is the value of Ka for this acid?
What is the complete mechanism for the synthesis of triphenylmethanol from phenyl magnesium bromide
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