Which synthetic and natural polymers can be used to make thread or rope? vulcanized rubber and starch
starch and cellulose
nylon and cellulose
vulcanized rubber and nylon

Can someone me with 6 to 10 plz this is for masteries test.

Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .

From the choices provided below, list the reagent(s) in order that will react with cyclopentanone to form the compound shown below.