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The Freezing point depression of a .100 molal MgSO4 solution is .225Celsius . Determine the experimental Van't hoff factor of MgSO4 concentration. M=π/RT π=iMRT Tf=iKfm Answer is 1.21How do you get this?
B. Determine the Freezing point of .100m aqueous solution of NaCL? Vant hoff factor of 1.87 at .100m Answer is -.35 celsius How do you get this?
If 113 g of Pb(NO3)2 reacts stoichiometrically according to the balanced equation, how many milliliters of 2.96 M aqueous NaI are required?
A 28.0-g sample of water at 260. K is mixed with 51.0 g water at 310. K. Calculate the final temperature of the mixture assuming no heat loss to the surroundings
The half-life of Plutonium-239 is 24,000 years. If 10 gms are present now, how long will it take until only 10% of the original sample remains? Round your answer to the nearest 10,000th.
Construct a table that shows the relationship among the group number, valence electrons lost or gained and the formula metallic
what is the purpose of using acetic anhydride in an experiment reacting with salicylic acid to produce acetylsalicylic
Describe the major absorption bands in the IR spectrum - indicate the bonds responsible for those peaks which prove you have synthesized isopentyl acetate and that it is an ester.
A solid mixture contains MgCl2 and NaCl. When 0.5000 g of this solid is dissolved in enough water to form 1.000 L of solution, the osmotic pressure at 25°C
How many grams of sucrose, C12H22O11, must be dissolved in 750. mL of water to prepare a 0.250 molal solution?
A sample that has the formula MgCl2.6H2O loses a portion of water when it is dried in an oven but undergoes no other changes. If the student started with 10.000 g of the compound, and ends with a residue that weighs 7.342 g whats the formula of th..
a 24.6 ml volume of hcl solution reacts completely with a solid sample of magnesium carbonate producing 183 ml of
What is the final temperature, in ?C, of the gas in the bubble outside the volcano if the final volume of the bubble is 161mL and the final pressure is 0.827atm, if the amount of gas remains constant?
after you preform your experiment you determine that the kf value for naphthalene is 6.91 . you are using 10g of
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