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Brunette
Questions and answers by visitors named
Brunette
Questions (16)
20.0 mL of a 0.125 M solution of potassium iodide is added to 15.0 mL of a 0.235 M solution of lead (II) nitrate. A reaction
3 answers
551 views
Determine the melting point of an aqueous solution containing 115 mg of saccharin (C7H5O3NS)added to 1.00 mL of water (density
4 answers
2,309 views
Compound: Concentration: Measured deltaT
LiCl 6.00 g/kg 0.492 deg C HCl 4.00 g/kg 0.389 deg C NaCl 6.00 g/kg 0.356 deg C
5 answers
462 views
The following is kinetic rate data taken as absorbance of reactant vs. time:
A: ln(A): Time/min: 0.532 ?? 0.0 0.484 2.54 0.442
1 answer
319 views
How much energy is required to vaporize 75.5 mL of ethanol (C2H5OH, d=0.789 g/cm^3) at its boiling point, if its heat of
2 answers
547 views
The following reation has the following standard thermodynamic parameters: delta H= -33.6 kJ/mol delta S= -59.8 J/(mol*K). C(g)
3 answers
1,336 views
at high temperatures, ammonia decomposes to N2 and H2.
2 NH3(g)--> N2 (g) + 3H2(g) Delta H for the reaction is positive and delta
5 answers
4,603 views
Predict the boiling point of the following compound using Trouton's Rule:
Heat of vaporization/Tb= 80 J/K Carbon tetrachloride
2 answers
747 views
Cl2O2 (g)---> 2ClO (g)
Time [Cl2O2] (M) 0....... 6.60*10^-8 172..... 5.68*10^-8 345..... 4.89*10^-8 517..... 4.21*10^-8 690.....
2 answers
517 views
Values of the rate constant for the decomposition of N2O5 at four different temperatures are as follows:
T(K) k(s^-1)
4 answers
4,989 views
Given the balanced equation for the decomposition of INO, and the rate of disappearance of INO, write the expressions for the
4 answers
4,054 views
The equilibrium constant Kc for the reaction
C <--> D + E is 7.90 * 10^-5. The initial composition of the reaction mixture is
1 answer
379 views
The equilibrium constant Kc for the reaction
C <--> D + E is 7.90 * 10^-5. The initial composition of the reaction mixture is
4 answers
609 views
How much NaOH (g) would you need to dissolve in water in order to prepare 2.75 L of a NaOH solution in which [OH-]= 0.50 M?
4 answers
2,312 views
The average pH of open ocean water is 8.1. What is the maximum value of [Fe3+] in pH 8.1 seawater if the Ksp of Fe(OH)3 is
2 answers
680 views
The average pH of open ocean water is 8.1. What is the maximum value of [Fe3+] in pH 8.1 seawater if the Ksp of Fe(OH)3 is
2 answers
1,103 views
Answers (9)
Nevermind. I figured it out.
Nevermind. I figured it out.
I keep trying that and it is saying that I have the wrong answer. here is my work: slope: -1.19*10^4 y-intercept= 30.439 Ea: -(-1.19*10^4 K) *(8.314J/moK)= 9.89*10^4 J/mol A= e^30.439= 1.65*10^13 (1.65*10^13) e^-(9.89*10^4J/mol/8.314*300 K)= 9.98*10^-5 I
U(s) + 3F2(g) ---> UF6(g)
nevermind, I got it. I must have been putting the numbers in wrong or something. :)
I found the answer for carbon tetrachloride. I just need to find it for n-butane (C4H10) and ethanol and the database is saying the answers are wrong. I don't understand why if the format is the same as the carbon tetrachloride
Thank you!
I did this and the database said the answer was wrong: (213.8 + 70.0) - (186.2 + 2*205.0)= -312.4 j/K*mol. Am I missing something?
thank you so much!
