what is the name of their molecule?
1) Current would remain at zeroTwice as many electrons are emitted from the cathode but they still have the same energy and it is not sufficient to overcome the work function of the gold250nm photons have an energy of 4.96eV2) Increasing the potential difference will make no difference, assuming the standard experimental setup where the potential retards the flow of electrons in order to measure the work functionNo electrons are emitted from the material with 0V applied against them, so none will be emitted with 5.5V applied against them3) Current would begin to flowThe electrons are created with an energy of 4.96eV which is greater than the work function of the aluminium cathodeCurrent would flow from this cathode until a retarding potential of 0.66V or more was applied between the electrodes.
Polymer molecule is composed of many monomersPolymer is used for plastic, clothes and many other thingsPolymers formed by a straightforward linking together of monomer unitsSome common polymers are: Name : Polyethylene low density (LDPE) Formula : –(CH2-CH2)n– Monomer : ethylene CH2CH2 Properties: soft, waxy solid Uses : film wrap, plastic bags Name : Polyacrylonitrile (PAN, Orlon, Acrilan) Formula : –(CH2-CHCN)n– Monomer : acrylonitrile CH2CHCN Properties: high-melting solid, soluble in organic solvents Uses : rugs, blankets, clothing ethylene consist of atoms : C (carbon), H (hydrogen), poly refers to many acrylonitrile consist of atoms: C (carbon), H (hydrogen), N (nitrogen), poly refers to many These are some of the polymer fibers used for clothes: polyamide nylon, PET or PBT polyester polyvinyl alcohol fiber (PVA) vinylon acrylic polyesters, pure polyester PAN fibers are used to make carbon fiber by roasting them in a low oxygen environmentTraditional acrylic fiber is used more often as a synthetic replacement for woolCarbon fibers and PF fibers are noted as two resin-based fibers that are not thermoplastic, most others can be meltedIf you like chemistry, here're the web sites you can read more
