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What is the half-life of a first-order reaction if the rate constant is 6.2 x 10-3 s-1?
The elementary steps for the catalyzed decomposition of dinitrogen monoxide are shown below.N2O(g) + NO(g) ® N2(g) + NO2(g) NO2(g) ® NO(g) + 1/2 O2(g) Which of the following statements is/are CORRECT?
1.
The overall balanced reaction is N2O(g) ® N2(g) + 1/2 O2(g).
2.
NO2(g) is a catalyst for the reaction.
3.
NO(g) is a reaction intermediate.
Given the initial rate data for nitrogen monoxide and oxygen reaction,
2 NO(g) + O2(g) ® 2 NO2 (g) was measured at 25 C for various concentrations of NO and O2. Determine the rate equations from these data.
Experiment
Conc [NO] (mol/L)
Cone [O2] (mol/L)
Initial Rate (mol/L s)
1
0.020
0.010
0.028
2
0.057
3
0.040
0.114
4
0.227
5
0.014
Which statement concerning relative rates of reaction is correct for the decomposition of phosphine?
4 PH3(g) → P4(g) + 6 H2(g)
A. The rate of disappearance of PH3 is 6/4 the rate of appearance of H2 B. The rate of appearance of P4 is equal to the rate of appearance of H2. C. The rate of disappearance of PH3 is 1/4 the rate of appearance of P4. D. The rate of disappearance of PH3 is 1/4 times the rate of appearance of H2. E. The rate of appearance of H2 is 1/6 times the rate of appearance of P4
charles flew the balloon for fifteen miles and stayed in the air for a total flight time of 45 mins. the balloon was
A compound composed of elements X and Y is 1/3X by mass. The atomic mass of element X is 1/4 the atomic mass of element Y. Find the empirical formula.
When aqueous solutions of lead( II) ion are treated with potassium chromate solution, a bright yellow precipitate of lead( II) chromate, PbCrO4, forms
what is your prediction for the next reaction?
Which of the following is not a general characteristic of amides?
Experiment Initial Initial Initial [A], Mol/L [B], Mol/L Rate 1 0.10 0.10 1.4 x 10^2 2 0.20 0.10 2.8 x 10^2 3 0.20 0.10 5.6 x 10^2 What is the rate law for the reaction. A) rate= k [A][B] B) rate= k [A]^2[B]^2 C) rate= k [A] D) rate= k [A][B]^2 E)..
universe on assumption that heat capacities are independent of temperature
Based on the results of your tests you have find out chemical formula for copper (II) sulfide. Define how you determined this from the excess reagents as well as the amount of precipitate formed in the lab.
Which ionization process requires the most energy? a) At^+(g) = At^2+(g) + e^- b) Po^+(g)=Po^2(g) + e^- c)At(g)=At^+(g) + e^- d) Po(g)=Po^+ + e^-
Question- Which equation best describes the electron affinity of Cl. (and why) Having a difficult time understanding the concept of electron affinity.
the pH of a saturated solution of a metal hydroxide MOH is 9.68. calculate the Ksp for the compound
What mass of sucrose should be combined with 461 g of water to make a solution with an osmotic pressure of 8.85 atm at 310 K? (Assume the density of the solution to be equal to the density of the solvent.)
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