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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.
If the correct mass percentage of HC2H3O2 in the vinegar is 5.40%, why does trial 2 give the best results. What is the percent error of this trial
Why is it important to use a large excess of sodium borohydride when doing a reduction in aqueous ethanol. Consider what reaction might occur between water and sodium borohydride.
when heated lithium reacts with nitrogen to form lithium nitride. what is the percent yield of the reaction if 13.9 of
What makes a red solution, like cherry Kool-Aid appear red to your eye? What colors of light are absorbed and what colors are transmitted?
C6H5NH3Cl is a cation chloride salt with acid. If 37.1 g of C6H5NH3Cl are dissolved in water to prepare a 150 mL solution, which is the initial molarity of the cation?
If 15 amino acids were linked together by condensation and elimination of water, how many water molecules would be lost and how many new peptide bonds would be formed.
Suppose that the atomic mass unit (amu) had been defined as one-eighth of the average mass of an atom of sodium instead of one-twelfth of the mass of an atom of carbon-12. What would the average atomic mass of magnesium be on this new scale
calculate the amount of heat required to completely sublime 30.0 of solid dry ice at its sublimation temperature. the
Write the chain propagation steps for the formation of dichloromethane in the chlorination of methane
What is the total pressure (Ptot) in the container in torr? What is the partial pressure of argon (Par) in the container in torr?
These names have been provided for an organic compound, but it is incorrect. Please provide the correct name, following IUPAC naming rules.
A block of metal has a width of 3.2 rm cm, a length of 17.1 rm cm, and height of 4.5 cm. Its mass is 1.5 kg. Calculate the density of the metal.
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