What is the rate constant at 25.0 ∘c based on the data collected for trial b? the following data were acquired in an iodination experiment involving acetone. all reaction times are in terms of the rate of disappearance of i2. trial 1st #-volume of 0.0010 m i2 (ml) 2nd #- volume of 0.050 m hcl(ml) 3rd #- volume of 1.0 m acetone(ml) 4th #- volume of water(ml) 5th #-temperature(∘c) 6th#-reaction time(s) a 5.0 10.0 10.0 25.0 25.0 130 b 10.0 10.0 10.0 20.0 25.0 249 c 10.0 20.0 10.0 10.0 25.0 128 d 10.0 10.0 20.0 10.0 25.0 131 e 10.0 10.0 10.0 20.0 42.4 38

Dying the folding patterns of protein molecules can microbiologists better understand cellular processes as well as some diseases, such as alzheimer’s, that are caused by proteins that have misfolded. the folding of these complicated molecules can be simulated on computers, but it takes a lot of processor power and time for even expensive supercomputers to do this. a group of researchers at stanford university developed software that can be used to distribute the processing of data to anyone who is willing to donate time on their idle personal computers. as a result, the researchers have been able to achieve protein-folding simulations that are far better than those other computing methods have done. which statement best describes the work of these researchers? the work is not scientific because the data are not processed in one location. the work is not scientific because the simulations are not reproducible. the researchers applied creativity to solve a problem in running an experiment. the researchers used only well-established scientific techniques.

Base your answer on the information below and on your knowledge of chemistry. nitrogen dioxide, no2, is a dark brown gas that is used to make nitric acid and to bleach flour. nitrogen dioxide has a boiling point of 294 k at 101.3 kpa. in a rigid cylinder with a movable piston, nitrogen dioxide can be in equilibrium with colorless dinitrogen tetroxide, n2o4. this equilibrium is represented by the equation below. 2no2(g) n2o4(g) + 58kj at standard pressure, compare the strength of intermolecular forces in no2(g) to the strength of intermolecular forces in n2(g).

Asolution contains 180 g of glucose (c6h12o6) and 162 g of water. what is the mole fraction of glucose?