Question

substance thatcan be moulded into different shapes by applying heat are called

Answer 1

These are referred to as thermoplastics

These are substances that when heated to above a certain temperature, they become soft to an extent that they can be re-moulded.

When cooled, they become hard again

This process can be repeated over and over.

Thermoplastics are different from thermosets which once set can not be re-moulded even at high temperature.

Answer 2

Explanation:

Ag3A = 3Ag + A

3 moles of Ag combine with 3 moles of A

Mass of Ag = 0.37

Mass of A = 607 - 0.37 = 606.63

Moles of Ag = 0.37/108 = 0.003426

Moles of A = 0.003426/3 = 0.001142

Molar mass of A = 606.63/0.001142 = 531211

A tribasic acid has 3 atom of H

Molar mass of the acid = 3 + 531211 = 531214 g/mol