Methyl methacrylate was polymerized at a mass concentration of 200 g/dm3 in toluene using azobisisobutyronitrile (AIBN) as initiator at a mass concentration of 1.64 x 10-2 g/dm3 and a reaction temperature of 60°C. Calculate the initial rate of polymerization and the number average molar mass of poly(methyl methacrylate) formed in the initial stages of the reaction given that the relevant rate coefficients at 60°C are:

Initiator dissociation, kd = 8.5 x 10-6 s-1

Propagation, kp = 833 dm3 mol-1 s-1

Termination, kt = 9.3 x 106 dm3 mol-1 s-1

Transfer to monomer, ktrM = 3.93 x 10-3 dm3 mol-1 s-1

Transfer to solvent, ktrS = 7.34 x 10-3 dm3 mol-1 s-1

Initiator efficiency, f = 0.7 Termination by combination is negligible Density of initial solution of methyl methacrylate in toluene is 860 g/dm3

First to answer all gets a donation question 3(multiple choice worth 1 points) (04.01 lc) which of the following levels is lower than cells in the hierarchy of organization of living things? molecules organs organ systems tissues question 4(multiple choice worth 1 points) (04.01 lc) which of these represents an individual form of life such as an animal, plant, or single-celled life form? organ organism organ system tissue question 5(multiple choice worth 1 points) (04.03 lc) what are the green structures inside plant cells where photosynthesis takes place called? chloroplast mitochondrion nucleus vacuole question 6(multiple choice worth 1 points) (04.03 lc) which of the following best matches a part of a living cell with the function it performs? cytoplasm: fluid which carries the nucleus and other organelles vacuole: fluid which carries the nucleus and other organelles cytoplasm: directs all of the cell's activities vacuole: directs all of the cell's activities question 7(multiple choice worth 1 points) (04.03 mc) read the table below. organelles of plant cells present in both plants and animals present in plants but not animals small in animals but large in plants organelle a organelle b organelle c which statement is most likely correct? organelle a is chloroplast, organelle b is cytoplasm, and organelle c is nucleus. organelle a is mitochondrion, organelle b is cytoplasm, and organelle c is nucleus. organelle a is cell wall, organelle b is chloroplast, and organelle c is mitochondrion. organelle a is mitochondrion, organelle b is chloroplast, and organelle c is vacuole. question 8(multiple choice worth 1 points) (04.03 mc) what will most likely happen in the absence of a nucleus? genetic information will not be transmitted by the cell. energy will not be released during cellular respiration. the cell will not store food, water, nutrients, and waste. the cell will lose its shape and structure.

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. find the probability that a worker selected at random makes between $450 and $500

Ron has 8 caps and 4 of his caps are blue. thes rest of his cap are red. how many of ron's caps are red