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Calculate the molecular mass of the nonionic solutes: 8.02 g of solute in 861 g of water lower the freezing point to -0.430 degrees C.
A solution is prepared by mixing 50.0 mL of 0.50 M Cu(NO3)2 with 50.0 mL of 0.50 M Co(NO3)2. Sodium hydroxide is added to the mixture. Which precipitates first?
Calculate the pH of the solution resulting from the addition of 10.0 mL of 0.10 M NaOH to 50.0 mL of 0.10 M HCN
An oxide of copper is decomposed forming copper metal and oxygen gas. A 0.500 g sample of this oxide is decomposed, forming 0.444 g of copper metal. What is the empirical formula of the copper oxide?
Urea, NH2CONH2, is a nonvolatile nonelectrolyte. Calculate the boiling point of a solution of 30.0g of urea in 250g of water
a 31.0-g sample of water at 260. k is mixed with 48.0 g water at 320. k. calculate the final temperature of the mixture
what mass of solid sodium formate (of mw 68.01) must be added to 105 ml of 0.55 mol/l formic acid(HCOOH) to make a buffer solution having a ph of 3.96? ka=0.00018 for HCOOH
A synthetic organic chemist wants to make 100.0 grams of benzoyl chloride C7H5OCl from benzoic acid C7H6O2 in the following reaction.
Explain why the addition of the HCl or NaOH improves the ability of the azo dyes
the pressure of a gas is 817 torr at 55degc. the quantity of the gas is fixed and the volume remains constant as the
he Ksp of AgCl at 25 oC is 1.6 x 10-10. Consider a solution that is 1.0 x 10-5 M CaCl2 and 1.0 x 10-5 M AgNO3. 1. Q Ksp and a precipitate will form.
What is the temperature at which the solution of KI will freeze if the solution contains 52.43 grams of KI dissolved in 479.1 grams of water.
NaOH solution to raise the PH of the waste stream to PH 10, determine the flow rate of NaOH solution in (Gal/min). Assume ideal solution conditions
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