What can contamination of reagents leads to? Unreliable results Reliable results Reproducible results Good results Catalase is the enzyme found in potatoes and It decomposes hydrogen peroxide (H202) to form water and oxygen gas. H202 + catalase - ----> H2O + 02 +E. The reaction is maintained at temperature 40 degree Celsius and there was a formation of bubbles. Based on the enzymatic reaction given, What do you think is the substance responsible for the formation of bubbles? Oxygen gas Hydrogen gas no reaction, because the enzyme catalase will be deactivated no reaction, because the enzyme catalase will be denatured Other: Based on the Fehling's test video, do you think the sugars ribose (in RNA) and the deoxyribose (in DNA) will both form a positive result (red precipitate) No Yes

What can contamination of reagents leads to? Unreliable results Reliable results Reproducible results Good results Catalase is the enzyme found in potatoes and It decomposes hydrogen peroxide (H202) to form water and oxygen gas. H202 + catalase - ----> H2O + 02 +E. The reaction is maintained at temperature 40 degree Celsius and there was a formation of bubbles. Based on the enzymatic reaction given, What do you think is the substance responsible for the formation of bubbles? Oxygen gas Hydrogen gas no reaction, because the enzyme catalase will be deactivated no reaction, because the enzyme catalase will be denatured Other: Based on the Fehling's test video, do you think the sugars ribose (in RNA) and the deoxyribose (in DNA) will both form a positive result (red precipitate) No Yes

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

For the decomposition of dinitrogen pentoxide in carbon tetrachloride solution at 30 °C 2 N₂O5 → 4NO2 + O2 the following data have been obtained: [N2O5], M 0.594 0.329 0.182 0.101 time, min 0 144 288 432 The average rate of disappearance of N₂O5 over the time period from t = 0 min to t = 144 min is M/min
General Chemistry - Spring21 Time l= Question 7 l'(aq) + OCI (aq» 1O + Cl (aq) (aq) The rate law for the above reaction was found to be: Not yet Rate = k[I][0cI"] answered The Rate constant was found to be =3.7 L/mol.s Marked out of 1.50 Calculate the initial rate in mol/L.s for an experiment where both and OCI are initially present at 0.6 M P Flag question (Note: Write your answer to 2 d.p. e.g 1.25) Answer: PREVIOUS PAGE NE
The rate of a certain reaction was studied at various temperatures. The table shows temperature (7) and rate constant (k) data collected during the experiments. Plot the data to answer the questions. What is the value of the activation energy, Ea, for this reaction? E₂ = What is the value of the pre-exponential factor (sometimes called the frequency factor), A, for this reaction? A = kJ. mol-¹ $ $1 T(K) 400 420 440 460 480 500 520 540 560 580 k (s-¹) 0.000369 0.00200 0.00928 0.0377 0.136 0.445 1.33 3.64 9.31 22.3
Ammonium ion reacts slowly with nitrite ion: NH4+ (aq) + NO2-(aq)-> N2(g) + 2H20 (1) Rate data for this reaction, measured at a certain temperature, are shown in the attached table. Use your rate law, and the rate and concentrations for any of the experiments, to calculate the rate constant (k) for the reaction in /Ms. Type your response: Expt. [NH4+] (M) [NO₂] (M) Rate (M s-1) 1 0.150 0.220 7.00 x 10-6 2 0.600 0.220 2.80 x 10-5 3 0.600 0.110 1.40 x 10-5
The chemical equation corresponding to the hydrolysis reaction can be written: R-CI+ H2O →R-OH+CI¯+ H* Let's call a the initial concentration in 2-chloro-2-methyl-butane and x the concentration of hydrochloric acid that is formed at time t. Water remains in large excess all over the course of the reaction. Then one can write: R-l + H20 Cexcess) > R-OH +d-+ht at to, a at t>0, a-se at tD, a a a 05: Recall the Arrhenius law and explain the meaning and unit of the individual terms. Deduce an expression of the activation energy as a function of two temperatures T1 and T2.
|回|回|回一回|日 https://bbhosted.cuny.edu/webapps/assessment/take/launch.jsp?course assessment id3 2032637_1&course Remaining Time: 1 hour, 27 minutes, 03 seconds. * Question Completion Status: QUESTION 5 Which of the following statements about a catalyst is true? O Catalysts increase the rate of the reaction. O Catalysts increase the activation energy of a reaction. O Catalysts decrease the rate of the reaction. O Catalysts cause a system at equilibrium to shift towards the reactants. O Catalysts cause a system at equilibrium to shift towards the products. QUESTION 6 What is the hydronium (H2O*) concentration of a solution with a pH of 5.16? Click Save and Submit to save and submit. Click Save All Answers to save all ansuwers. here to search DELL
Methyl salicylate has the odor of oil of wintergreen. This ester is prepared by the Fisher esterification of salicylic acid with methanol, shown here: HSO, OH * CH,OH OCH, • H,0 +] OH OH Use the dropdowns below to indicate the order of the steps that occur in this reaction mechanism to transform salicylic acid into methyl salicylate. Step 1 [ Choose (Choose Step 2 Protonation of the C-O oxygen atom Step 3 Proton transfer to neutralize the product Reforming of the CHOand loss of the leaving group Step 4 Proton transferts the OH group on the tetrahedral intermediate Attack of the methanol on the carbon of the C-O Step 6 Breaking of the pi bond to push eléctrons onto exygeri nd form the tetrahedial intermedian
2. When we use the stopped-flow method to determine the rate constant, which result is more accurate, the first-order decay curve or the first-order growth curve? Why?
Identify the stages of initiation, propagation, delay, inhibition, and termination in the following chain mechanism; If the stage does not exist, respond with a false, if it does exist, place a true. A. → B. + C A. + B. → P A2 → A. + A. A. + P→ B. Initiation: Propagation: Delay: Inhibition: Termination:
Refer to the following table to answer a, b, and c. (NOTE: Ea is activation energy.) Conditions Chemical Reaction A B C D Collision between particles ✓ X ✓ ✓ Proper orientation of collisions ✓ X ✓ X Kinetic energy of reactant particles < Ea < Ea < Ea < Ea a. Which chemical reaction will proceed fastest? __________b. Which chemical reaction will proceed slowest? __________c. Which chemical reaction will not proceed at all? __________
Please Answer ASAP In Handwritten form. Also Show the Graphical representative using a graph paper!!
Attached is the basic model for an enzyme-catalyzed reaction. Assume that substrate binding is rate determining. Write the equations for the total amount of enzyme in the reaction and the rate of the reaction. Is A or B correct? If not, show work for the correct answer A : [E] = [ES] + E B : [E] = [E]0 - [ES] ; r= k2 [E]0 S / kM + [E]