Chemistry, 08.07.2019 18:10 qorderiusnewton
For a linear polymer molecule, the total chain length l depends on the bond length between chain atoms d, the total number of bonds in the molecule n, and the angle between adjacent backbone chain atoms θ, as follows: l = n d s i n (θ/2) furthermore, the average end-to-end distance for a series of polymer molecules r is equal to: r = d (n)^1/2 for a linear polytetrafluoroethylene determine: a. the number-average molecular weight for l=2000 nm; b. the number-average molecular weight for r=17 nm.
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Chemistry, 22.06.2019 08:30
What method(s) do plants use to obtain nitrogen? select all that apply. absorb it from the atmosphere use bacteria to convert nitrogen to usable form obtain usable nitrogen compounds from the soil absorb nitrogen from water taken in at the roots
Answers: 3
For a linear polymer molecule, the total chain length l depends on the bond length between chain ato...
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