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...

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The enzyme examase catalyses the following reaction, A - B where A is the reactant and B is the product A595 measurements were used to determine the catalytic activity of examase by measuring the rate at which B is produced. From this, the activity of the enzyme was determined to be 42 µmol/mL per minute. A standard albumin solution (concentration = 10 mg/mL) was used to prepare a standard curve of Abs595 vs amount of protein in mg. The protein assay was also performed using 100 uL of a 1 in 10 dilution of the original examase sample. For the absorbance measurements, it was determined that the sample used in the A595 measurement contains 1.2 mg of examase. Which of the following statements correctly gives the specific activity of examase? 1.0.35 U/mg O 2.0.035 U/mg 3. 5040 U/mg O 4.35 U/mg O 5.3.5 U/mg
1C. Effect of Catalyst Catalytic material to be tested Catalyst present (Yes or NO) Test Observation tube # Reference Clear solution, No fizzing (plain H2O2) NO 2 KI fast evolution Vigorous fizzing, gas/bubbles of yes yes NO Vigorous fizzing, Very fast evolution of gas/bubbles 3 PbO2 Copper wire No Change, No fizzing, No bubbles 5 Fresh potato Moderate fizzing, slow bubbles evolution yes yes Boiled potato Very slow fizzing, Few bubbles Which substance is the most catalytically active for H2O2 decomposition? Question 5. Arrange the five tested materials in order of increasing catalytic activity. Question 6. Explain for the difference in your observations between test tubes 5 and 6.
20.) A generic reaction has the rate law rate = k[A]2[B]0. What [A], in moles per liter, will be required to give a rate of = 0.383 M/s when the [B] = 0.181 M? The value of the rate constant is 0.344. Do not include units. Your Answer:
|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
100 80 A 60 PE (kJ) A+B 40 20 Progress of the reaction The activation energy is C+D The reaction is 3 KJ (endothermic or exothermic).
2:31 1 4 7 +/- Question 3 of 13 The activation energy, Ea, for a particular reaction is 13.6 kJ/mol. If the rate constant at 475 K is 0.0450 1/min, then what is the value of the rate constant at 769 K? (R = 8.314 J/mol. K) 2 5 8 1/min 3 60 9 O Submit Tap here or pull up for additional resources XU x 100
Please Answer ASAP In Handwritten form. Also Show the Graphical representative using a graph paper!!