a) Two common types of commercial glue are epoxy and superglue. Epoxy cannot be dissolved in any solvent, while superglue can be dissolved in acetone. What does this information tell you the molecular architecture in these polymers

Epoxy is cross-linked while super glue is branched.

Explanation:

The combinations of monomers to produce a giant molecule is known as polymerization and the products of polymerization reaction are called polymers.

The property of the two polymers that is being tested here is their solubility that is their dissolving abilities/nature.

When a polymer can dissolves for instance super glue dissolving in acetone it is said that the polymer is BRANCHED.

When a polymer can not dissolve in solvent, i is said that the polymer is CROSS LINKED.

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles

the answer is 75.0%.