are composed of long chains of polymers that are tangled and can be easily pulled apart by the application of tensile stress. These can easily be recycled. are composed of long chains of polymers that are strongly cross-linked to one another. These are difficult to recycle.
a. Thermoplastics, Thermosetting polymers
b. Thermosetting polymers, Elastomers
c. Thermosetting polymers, Thermoplastics
d. Elastomers, Thermoplastics

Which of the following did jj thompson discover about atoms? a)an atom has an internal structure. b) atoms are tiny indivisible particles. c)electrons orbit the nucleus of an atom. d) the nucleus of an atom contains protons and neutrons.

Me i dont know what to do! the table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.

How many moles of sulfuric acid (h2so4) are needed to react completely with 6.8 moles of lithium hydroxide (lioh)? 2lioh + h2so4 → li2so4 + 2h2o a. 3.4 mol h2so4b. 6.8 mol h2so4 c. 10.2 mol h2so4 d. 13.6 mol h2so4