The average atomic mass formula is easy to handle once you understand the basis of the calculations. It uses the isotopic abundance of the element in percentage and the atomic mass of the isotope in atomic mass unit (amu). The equation of average atomic mass is: AM=f1m1+f2m2+...+fnmnA...
A BASIC program for calculating precise, average and nominal molecular weights from elemental formulaedoi:10.1002/bms.1200100905A simple interactive BASIC program for calculating ‘precise’ (single isotopic), average and nominal masses of a molecular ion and all fragment ions is described.R. Hill...
production methodnaphtha obtained from petroleum is cracked and fractionated to obtain a mixed gas of butene and butane, which is polymerized at a temperature of -30~30 ℃ with lead chloride and Fred a gram of Ford catalyst (Friedel-Crafts catalyst). the polymer is refined and filtered after ...
By comparing the experimental and theoretical results for the ultrahigh-molecular-weight polyethylene-carbon filler composite,7–9 the analysis using electron tunneling was concluded to be more reasonable than electron hopping. Accordingly, the temperature dependence of conductivity (or resistivity) of ...
mol wt average Mw ~534,000 by GPC refractive index n20/D 1.42 transition temp Tg −38 °CTm 171 °C density 1.74 g/mL at 25 °C SMILES string FC(F)=C InChI 1S/C2H2F2/c1-2(3)4/h1H2 InChI key BQCIDUSAKPWEOX-UHFFFAOYSA-N Looking for similar products? Visit Product Comparison ...
A BASIC program for calculating precise, average and nominal molecular weights from elemental formulaeA simple interactive BASIC program for calculating 'precise' (single isotopic), average and nominal masses of a molecular ion and all fragment ions is described.doi:10.1002/bms.1200100905...
On the basis of the first-order Markovian statistics, we propose a general matrix formula for the weight-average molecular weight of crosslinked polymer systems, explicitly given by M| w=Mmacr w,0+WX 0(I-X) -1S f. This equation is valid for both step and chain-growth polymerizations...
molecular weight distributionOn the basis of the first-order Markovian statistics, we propose a general matrix formula for the weight-average molecular weight of crosslinked polymer systems, explicitly given by M w = M w ,0 + WX0 (I X)1 Sf. This equation is valid for both step and chain...
The hetrochain model was applied to develop a matrix formula describing the weight-average molecular weights for a reaction system that involves simultaneous long-chain branching and crosslinking. The heterochain model describes the molecular architecture formed through the primary chain connection that ...
For each linear fit, 95% confidence and prediction intervals are provided, calculated using the formulae by Faraway [45]. The confidence interval is a statistical range that quantifies the uncertainty surrounding an estimated parameter, providing a plausible range of values within which the true ...