Already have an account? Get multiple benefits of using own account!
Login in your account..!
Remember me
Don't have an account? Create your account in less than a minutes,
Forgot password? how can I recover my password now!
Enter right registered email to receive password!
A 0.194-g sample of a nonvolatile solid solute dissolves in 9.82 g of cyclohexane. The change in the freezing point of the solution is 2.94 degrees Celsius.
From the talbe: Kf = 20
a. What is the molality of the solute in the solution?I got .147 but I didn't think this seemed right.
b. Calculate the molar mass of the solute
c. The same mass of solute is dissolved in 9.82 g of t-butanol instead of cyclohexane. What is the fexpected freezing point change of the solution?
From the table: t-Butanol Kf=9.1, Freezing point = 25.5
The percentage of an additive of gasoline was measured six times with the following results: 0.13, 0.12, 0.16, 0.17, 0.20, 0.11%. Find the 90% confidence level interval
suppose 1.5 mol of methane is allowed to react with 4 mol of oxygen. what is the limiting reagnant?
The resulting mixture exerts a pressure of 745 mm Hg at 95 C. What was the mass of the original sample?
A buffer solution was prepared by mixing 25.0 ml of 0.5M sodium acetate with 35.0ml of 0.6M acetic acid. Calculate the pH. The Ka for acetic acid is 1.7x 10^-5
Explain why the H-H distances determined for coordinated dihydrogen by X-ray diffraction are always significantly shorter than
explain why a less reactive halogen is isolated in the dichloromethane
how does a water softener work chemically? What's better to drink tap water or bottle springwater and why?
What alkene (including cis and trans isomers) would be produced by the dehydration of the following alcohols? Where possible, predict the relative amounts of each product according to Zaitsev's rule.
What is the percent by mass of sulfur trioxide (SO3) if oleum is expressed as 3H2SO4 . 5SO3?
Calculate the change internal energy for a system that is giving off 45.0 kJ of heat and is performing 855 J of work on the surroundings.
Calculate the freezing point depression of a solution containing 0.20% wt/v glucose (mol wt of 180) and 0.5% NaCl
A balloon filled with helium gas has a volume of 500 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!
whatsapp: +1-415-670-9521
Phone: +1-415-670-9521
Email: [email protected]
All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd