Where is the data for this question? what is the purpose ?
Answer:
Heterogeneous
Explanation:
A chemical substance is composed of one type of atom or molecule. A mixture is composed of different types of atoms or molecules that are not chemically bonded. A heterogeneous mixture is a mixture of two or more chemical substances where the various components can be visually distinguished.
Answer:
c
Explanation:
efficiency is measured in % hence 0.02% is smaller than 20%
