The number-average molecular weight of poly(acrylonitrile-butadiene) alternating copolymer is 1055145 g/mol. determine the average total number of acrylonitrile and butadiene repeat units per molecule key in your answer as the whole number only. avoiding round-off error by using all the numbers during intermediate steps.

How has the scientific community addressed the safety of chemicals? a. chemicals are repeatedly tested, even those that have existed for a long time. b. existing chemicals are tested if they have never been tested before. c. chemicals are tested if they are suspected to have caused a problem. d. only new chemicals are tested.

Cucl2 + 2nano3 cu(no3)2 + 2nacl what is the percent yield of nacl if 31.0 g of cucl2 reacts with excess nano3 to produce 21.2 g of nacl? 49.7% 58.4% 63.6% 78.7%

Provide a stepwise curved arrow mechanism that fully explains the outcome of the reaction shown below. oh нао* heat он