How many grams of ethyl alcohol added to water
How many grams of ethyl alcohol, C2H5OH, must be added to 1.000 kf of water so that the solution will not freeze until -20 degrees C? For water, Kf= 1.86 degrees C/m.
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Which concept would explain why the carbon to carbon bond lengths in benzene, C6H6, are identical? a)hybridization b)London dispersion forces c)resonance d)hydrogen bonding
Calculate the maximum number of moles and mass of iodic acid (HIO3) that can form when658 g iodine trichloride reacts with111.2 g water. What mass of the excess reactant remains?
A student was asked to determine the strength of the acetic acid in a vinegar solution. For 25.00 mL of vinegar he used 32.05 mL of a 0.4235M solution of sodium hydroxide to neutralize using phenolphthalein as indicator. What was the concentration
Calculate the pH at the points in the titration of 40.00 mL of 0.425 M NH3 for the reaction below. NH3(aq) + HNO3 NH4+(aq) + NO3?(aq) For NH3, Kb = 1.8x10-5. Enter your answer with 2 decimal places. Enter scientific notation as 1.23E4.
nickle (II) ion is a group III cation. The compound Ni(OH)2(s) is very insoluble in water; the Ksp of Ni(OH)2 is 2.0x10^-16> nevertheless, Ni(OH)2(s) does not precipitate from a basic solution that contains ammonia
Which of the following combinations of quantum numbers are allowed? A) n=4, I=2, mi=1, ms= -1/2 B) n=2, I=2, mi=2, ms= 1/2 C) n=1, I=0, mi=1, ms= 1/2 D) n=4, I=1, mi=1, ms = 1/2
A mass of 0.0600 g of magnesium metal is completely reacted with excess hydrochloric acid. Write the balanced equation to answer the question. What volume of the gas at STP would be produced
When (R)-6-chloro-2,6-dimethyloctane undergoes solvolysis in 80% aqueous acetone, what is the relationship between the substitution products formed in the reaction
Which of the following is always true for a spontaneous process at constant temperature? A) Delta S system + Delta S surroundings = q/T B) Delta
If 24.60 mL of a standard 0.3871 M NaOH solution is required to neutralize 43.87 mL of H2SO4, what is the molarity of the acid solution?
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