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Question- A solution is prepared by dissolving 297.3 g of lactose, C12H22O11, with 225.3 g of H2O at 100 degrees C. By how much lower (in mHg) will be the vapor pressure of water above this solution is compared with pure water? The solution is a non-volatile compound.
Please take care to answer the question as mark are equally granted for each point
The freezing point of t-butanol is 25.50C and Kf is 9.1C kg/mol. Usually t-butanol absorbs water on exposure to air. If the freezing point of a 10.0g sample of t-butanol is 24.59C. How many grams of water are present in the sample?
Can some one verbally explain the ideas of tunneling and reflection in the case of particles confronting an energy barier
describe a common buffer system and elution method in ion exchange chromatography. what are the salt ions in the
a vertical cylinder contains v moles of an ideal gas and is closed offby a piston of mass m and area a. the
adding sodium hydroxyde in the purification of a solid by recrystallization experiment?
when separated from a water solution cuso4 forms a hydrate with 5 water molecules per formula unit. if 38 g of
In an TLC experiment with paprika, which red spot is capsanthing and which is capsorbin? Is it the one that travels the farthest or least? How can You tell?
A sample containing 0.187 g Cl- is dissolved in 50.0 mL water. How many moles of Cl- ion are in the solution? What is the molarity of Cl- ion in the solution?
What is the molar concentration of chloride ion in the final solution? (assuming complete dissociation) 2) What is the percentage yield if 122.5 mg of a light blue-green solid is collected after 100.00 mL of this solution is combined with 25.0 mL ..
Using as sample of gas of 12.0 moles are in a tank of 8.00 Litres at the temperature of 22.6 degree celsius. compute the difference in pressure between CH 4 and an ideal gas under these conditions
Calculate the volume of oxygen,measured at STP, produced by the decompistion of 2.87 g of potassium chlorate.
Problem- Which compound of the following would you expects to have the lowest boiling point? My guess is c because I'm thinking that amines with more protons attached have more capabilities of hydrogen bonding thus higher boiling points so an amin..
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