What are insulated foam cups most likely mode out of?
polymyethyene
polystyrene
nylon thread
vulcanized rubber

Polystyrene

Explanation:

Polystyrene is synthetic hydrocarbon made up of styrene monomers.

It is water proof material.

It is chemically inert that's why can not break down by the reaction of acid and bases.

It is used for the production of disposable glass, cups, plated and other dinner ware.

It is also used in packing.

Polystyrene is light weighted because it consist of almost 98% air.

Polystyrene foams are used as insulating material in buildings.

Polystyrene foam is formed by using blowing agents.

It is non-biodegradable.

Its formula is (C₈H₈)ₙ.

Its density is 0.96- 1.05 g/cm³.

It is solid at room temperature and melt above 100°C but on cooling again it becomes rigid.

i'm assuming that the correct answer is indeed the first one/ "a"..

in 1783 cavendish was working with his hydrogen gas and found that when he burned it and condensed the vapor it was water. this was very significant since it disproved the greek theory of elements completely since water was not a simple substance but the product of two gases. it was lavoisier who hearing of the experiment gave cavendish's gas the name hydrogen ("water-producer") and added that hydrogen burned by combining with oxygen and that water was a hydrogen-oxygen combination.

explanation: