Is a hi polymer ereraser a mixture, homogenous or a heterogeneous? I think it's a mixture due to having 2 ingredients. but not 100% sure.

the 2 part of the question ask how can you separated it.

I am very confused on this on so any help would be great.

The concentration of ionic substances is important for the heart to beat. your heart responds to electrical impulses that travel through heart cells that are made up mostly of water. which properties of ionic compounds are important to support this function? solubility in water conductivity crystalline melting point