2) Describe zeolites. Referring to the Lancaster test, describe one chemical reaction or process ...
2) in a catalyzed chemical reaction, one function of a catalyst is to A) increase the number of successful reactant collisions. B) decrease the concentration of reactants. change the equilibrium concentrations of the products and react D) increase the energy given off during the reaction E) increase the temperature at which the reaction is carried out. 3) Refrigerating perishable foods affects biochemical reactions by A) increasing concentrations of antioxidants. B) removing bacteria. C) decreasing the rate of reactions affecting spoilage....
2. Describe the process of obtaining energy (light-dependent reactions) and the process of using that energy for carbon fixation (light-independent reactions) in photosynthesis. Make sure to mention where in the cell each of these reaction types are occurring and what the chemical inputs and outputs are for each of those processes.
1. Describe one experiment that can test the hypothesis that DNA replication is semi conservative. Describe the results of this experiment if replication was conservative. And if it was distributive? 2. What type of chemical bond contributes to the specificity of base paring in the DNA? Are there any other chemical or physical factors in the structure o f the DNA molecule contributing to the thermodynamic stability of the DNA? 3. List the m ajor differences between DNA and RNA....
ORGANIC CHEMISTRY QUESTION 5 PART A-------- Describe a chemical test for the identification of a double bond in an organic molecule. PART B-------- During the reflux in Part B, the reaction smokes. What is the substance responsible for the smoke? (It would help if you looked at the complete reaction.) PART C------- The reaction of 17.0 g of 1,2-dibromo-1,2-diphenylethane with 1.12 g of KOH giving 6.32 g of diphenylacetylene. What is the % yield of this reaction?
What chemical test (reaction) could you use to determine whether or not an aldehyde is present in a molecule? (2 pts bonus)
One side reaction that occurs during the synthesis of polyurethanes is the formation of allophantes. Describe this reaction using a chemical equation and describe the consequences of this side reaction.
Data and Observations Summary of the Experiment Write a balanced chemical equation to describe the reaction that you used to identify the anions in this experiment. For this summary, ignore the complications that may be caused by the presence of all other ions. Also describe the observations (i.e., what you actually saw) to confirm the presence or absence of each ion. The entries for phosphate have been filled in as an example (and because it is one of the more...
PRE-LAB QUESTIONS 1.) Describe two ways you know that a chemical reaction has taken place. 2.) Compare and contrast physical change vs. chemical change. 3.) What is the difference between an intrinsic property and an extrinsic property? Give an example of each, different than those listed in this lab.
6. Describe a simple chemical test to differentiate between the following pairs of compounds. a) Ethanal and butanal b) Ethanal and propanone 7. Write equations to suggest how hydrogen cyanide reacts with propanone. 8. Suggest reagents and describe the reaction conditions necessary to carry out the following conversions. Write equations to show the reactions involved. a) CH,COCHE CH,CHCICH b) CH.CH,CHOCH.CH,COOCH,
A reaction that is characteristic of a substance is frequently referred as a Select one: Test Observation chemical reaction Hypothesis