This question hasn't been answered yetask an expertperform dilution calculations to determine the molarities at the instant of mixing for the iodide, persulfate, and thiosulfate ions used in each experiment. you can assume that the 10 drops of starch is 0.5 ml and that the total volume in each experiment is 50.5 ml. a. calculate the average elapsed time for each experiment (in seconds).b. calculate the rate for each reaction. the rate is equal to: - [ (thiosulfate)f ? (thiosulfate)i ] / elapsed timeremember that the final concentration of thiosulfate for each experiment is zero! my results : (temp = 22c room temp)experiment 1: flask 1= 1 min 19 sec , flask 2 =1min 18secexperiment 2: flask 1= 43 sec , flask 2 = 44 secexperiment 3: flask 1 = 1min 34 sec , flask 2 = 1min 33 secexperiment 4: flask 1 = 2min 21 sec , flask 2 = 2 min 26 sec temp: 7c (ice bath solution)

The diagram shows the structures of horse and cat forelimbs. what does the diagram suggest about the evolutionary relationship between these two mammals? a. they have homologous structures, indicating a common ancestor. b. they have analogous structures, indicating a common ancestor. c. they have homologous structures, indicating that they do not have a common ancestor. d. they have analogous structures, indicating that they do not have a common ancestor.

Start an single atom tab. observe the decay of polonium-211. after each decay, press the reset nucleus button to watch the process again. write a description of alpha decay for po-211

13. calculate the initial concentration (before precipitation) of carbonate ions after the addition of each 0.05 ml of solution b to the 1.00 l beaker of solution a. divide the work among group members and write the answers in the table in model 3. assume the volume change as solution b is added is negligible. 14. notice the initial concentrations of zn2+ - and cu2+ in the table in model 3. a. explain how these were obtained from the data in model 2. b. as solution b is added and precipitates form, do these initial concentrations change? 15. use the data in model 2 to indicate the presence of precipitate (either znco3 or cuco3) after each 0.05 ml addition of solution b in model 3. 16. use the initial concentrations of carbonate ions and zinc ions to calculate the reaction quotient, qsp for the zinc carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3. 17. use the initial concentrations of carbonate ion and copper(ii) ions to calculate the qsp for the copper(ii) carbonate scenarios in model 3. divide the work among group members and write the answers in the table in model 3.