Module 4
Hydrogen bonding is present in all of the following molecular solids EXCEPT ____ .
a.CH3OCH3
b.H2O
c.NH3
d.HF
e.H2O2
a.CH3OCH3
How many grams of ethylene glycol (C₂H₆O₂) must be
dissolved in 425 g of water to prepare a 1.75 m solution?
46 g C₂H₆O₂
For the hypothetical reaction A + 3B --> 2C, the rate expression should be expressed as:
Hopefully one of you gets it cuz im too lazy to type it
A reactant in a first-order reaction is found to deplete from 8.5M to 6.4M in 67 seconds. How long will it take for the reactant to deplete from 5M to .35M?
665 sec
Who created the national anthem?
Lana del Rey
Consider one molecule of 2-propanol (aqueous). What is the max amount of hydrogen bonds 2-propanol would be able to make with the water molecules around it?
3
Calculate the molality of an ammonium sulfate solution if 491 g of ammonium sulfate is dissolved in enough water to make 1000 mL of solution and the
density of the solution is 1.228 g/mL
5.05 m
What is the rate law for the reaction below?
2H2 + O2 = 2H2O
rate=k[H2]x[O2]Y
The half-life of a first-order decomposition reaction is 2.36 hours. If the initial concentration of reactant is 0.52 M, what is the concentration of reactant after 752 seconds?
.49M s
Who's the best qb in the nfl?
Patrick Mahomes
Name all IMF's in order from least to strongest.
LDF
Dipole-Induced
Ion-Induced
Dipole-Dipole
Ion-Dipole
H-bonds
A 12.0% by mass solution of ethanol (C₂H₆O) in water has a density of 0.972 g/mL at 25°C.
What is the molarity of this solution?
2.5 M
What are the units for 0th, 1st, 2nd, and 3rd order reactions?
M/t, 1/t, 1/Mt, 1/M2t
The isomerization of cyclopropane to form propene is a first-order reaction. At 760 K, 15% of a sample of cyclopropane changes to propene in 6.8 min. What is the half-life of cyclopropane at 760 K?
29 min
Who was in Paris?
Paris the Peer Leader
What is the Clausius-Clapeyron Equation
Too eepy to type it, but yall should know it
Determine the mass percent NaOH in a 2.50 M sodium hydroxide solution that has a density of 1.08 g/mL.
9.26%
Suppose that, at a particular moment during the reaction, molecular oxygen is reacting at the rate of 0.024 M/s.
a) At what rate is N2O5 being formed?
4NO2 (g) + O2 (g) → 2N2O5 (g)
.048 M/s
The activation energy for the following reaction is 60 kJ/mol.
Sn^2+ +2Co^3+-> Sn^4 + 2Co^2+
By what factor (how many times) will the rate constant increase when the temperature is raised from 10 C to 28 C?
4.6 times
This person was awarded with two towers for being a frequent flyer on Boeing 767
Calculate the amount of energy (in kilojoules) needed to heat 346 g of liquid water from 0°C to 182°C. Assume that the specific heat of water is 4.184 J/g°C over the entire liquid range and that the specific heat of steam is 1.99 J/g°C. Assume Hvap is 40.7 kJ/mol.
982.3 kJ
What is the formula for Raoult's Law and what does each variable mean?
Pa=XaPao
*insert Yocelyn's review cuz i am not paying 20$ to paste pictures*
rate=k[S2O8-2][I-]
The rate law for the reaction 2NO2+ 03 -> N205+02 is rate = k[NO2][03]. Which one of the following mechanisms is consistent with this rate law?
A.NO2 + NO2 -> N2O4 (fast)
N2O4 + O3 - N2O5 +O2(slow)
B.NO2 +O3 -> NO5 (fast)
NO5 + NO5 -> N2O5 + 5/2 O2 (slow)
C. NO2 + O3-> NO3 NO3+O2 (slow)
NO3 + NO2 -> N2O5 (fast)
D. NO2 +NO2 -> N2O2 +O2 (slow)
N2O2 +O3 - N2O5
C. NO2 + O3-> NO3 NO3+O2 (slow)
NO3 + NO2 -> N2O5 (fast)
What's my favorite yearning song?
The one that got away by Katy Perry