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!
Question- Part (a) A sample of an ethanol-water solution has a volume of 52.4 cm3 and a mass of 50.7 g. What is the percentage of ethanol (by mass) in the solution? (Assume that there is no change in volume when the pure compounds are mixed.) The density of ethanol is 0.789 g/cm3 and that of water is 0.998 g/cm3.
Part (b) Alcoholic beverages are rated in proof, which is a measure of the relative amount of ethanol in the beverage. Pure ethanol is exactly 200 proof; a solution that is 50% ethanol by volume is exactly 100 proof. What is the proof of the given ethanol-water solution?
I am in rush anybody is there to provide me the answer in quick phase
A reaction was found to be second order in carbon monoxide concentration. The rate of the reaction ___________ if the [CO] is doubled, with everything else kept the same.
At constant temperature and volume, 3.8?10-3 mol of helium is added to a 1.0 L sample of xenon at 0.081 atm and 325 K. What is the total pressure of the gas mixture
Problem- Again, you are asked to take over the sanitation program for a winery. This winery is brand new, with the types of equipment listed above. The owners do not want to use anything except COLD water in the winery, because they want to encour..
A solution of a dye absorbs light of wavelength 480 nm, and for this absorption, the extinction coefficient is 18600 L/mol/cm. A sample of the dye of unknown concentration is placed in an optical cell of path length 1 cm
a peice of iron mass25.0 g at 398 k is placed in a styrofoam coffee cup containing 25.0 ml of water at 298 k. assuming
Gas boiling matographic analysis of the product showed that the compound was pure, and a calibration of the thermometer indicated that it was accurate. What procedural error might the student have made in setting up the distillation apparatus
A solution containing 100g of unknown liquid and 900g water has a freezing point of -3.33C. Given Kf=1.86C/m for water, determine the molecular weight of the unknown liquid and express your answer in g/mol.
What is the difference (in pH units) between the initial pH of a 0.20 M NH3 / 0.20 M NH4Cl buffer to the pH of the buffer after the addition of 10.0 mL of 0.10 M HCl to 65.0 mL of the buffer
Balance the following half reaction: HS(-) = S2O3(2-) AND calculate what the slope of the boundary between HS- and S2O3^2- is in a pe-pH diagram.
Question- A solution made of equal concentrations of lactic acid and sodium lactate was measured to have a pH = 3.08. Calculate the pKa and Ka of lactic acid
Suggest a way this might work based on knowledge of phase equilibrium. To do this first consider air to be made up of only N2 (78 mole %), O2 (21%), and Ar (1%) and estimate the mole fractions of each in both liquid and gas phases if one mole of a..
A 0.8612 g sample of a mixture consisting of NaBr, NaI, and NaNO3 was analyzed by adding AgNO3 to precipitate the Br and I, yielding a 1.0816g mixture of AgBr and AgI.
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