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.

What’s a special glass that most beakers are made of

Calculate - analysis of compound composed of iron and oxygen yields 174.86 of fe and 75.14g of o. what is the empirical formula for this compound?

Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?