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1. How many grams of ethylene glycol C2H4(OH)2 are needed per kilogram of water to protect radiator fluid against freezing down to -10 degrees celsius?
2. For benzene C6H6 the freezing point constant K is 5.12 kgmol^-1 and its notmal freezing point is 5.5 degrees celsius. What is the freezing point of a solution containing 100.0 g of benzene and 20.0 g of naphthanlene C10H8 ?
3. Calculate the freezing point of a 0.2 m CaCl2 aqueous solution, assuming it dissociates completely to form ions in solution.
A student wanted to determine the molar concentration of acetic acid in a commercial vinegar sample. He used a volumetric pipet to deliver 3.00 mL of vinegar to an Erlenmeyer flask, added about 30 mL orf water and 3 drops of phenolphthalein indica..
Are there hints in the data provided which would aide in choosing which integrated rate law to use? Also, if they were to give you the rate law for the overall equation, would you use the overall order's integrated rate law or the specific reactan..
describe the soil and site characteristics of soilderived from older fresh water sediments as one of the six soil
must be dissolved in 15.0g of camphor to lower its freezing point by 2 degrees celsius? constant k of camphor = 37.7 (*C x kg)/mol
Consider the reaction Pb(s) + 2H^+(aq) ? Pb^2+(aq) + H2(g). If the hydrogen gas pressure is maintained at 1.00 atm and the lead(II) ion concentration is 0.025 M, find the pH at which this reaction is at equilibrium
solid aluminum reacts according to the balanced equation. if a total of 830 kj of heat is produced in the reaction as
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?
How many moles of NaOH were required to neutralize the amount of KHP in Part b. d) What is the concentration of the NaOH solution?
what antibiotic woiuld you put in an agar plate to ensure that the cells of a bacterial colony contain the plasmid withou an insert? c) which phenotype will indicate the presence of plasmids that contain human DNA fragments?
What volume of ethylene glycol, C2H6O2, a nonelectrolyte, must be added to 15.0 L of water to produce an antifreeze solution with a freezing point of -30*C? What is the boiling point of the solution?
Cadaverine are 9.13 and 10.25. If the ends of these molecules look the same, why do they have different pkas?
The root mean square velocity of HCl at some temperature was 697.0 m/s. What would be the root mean square velocity of CO2 at this temperature
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