Is leather a magnetic substance or a non-magnetic substance.

Iwill give extra points to who gets this right

Zoe is investigating the composition of substance a, an unknown substance. using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1. what is substance a? a. a compound b. an element c. a heterogeneous mixture d. a homogeneous mixture

How do you lengthen a pattern piece? (family and consumer science, sewing)