Magnetic is a physical property.
Answer:
If we start with 20 atoms of plutonium – 239, how many would remain after 48,240 years?
Explanation:
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<span>The righ answer is the option A. They are made up of two or more pure substances that are not chemically bonded. A classicall expample ot heterogeneous mixtures are sugar and salt. Sugar is a pure substance, salt is also a pure substance, when you mixe them you form mixture where salt is still salt and sugar is still sugar, that is what "they are not chemically bonded" means. So you can separate them by physical media. </span>
I believe it is aluminum
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C metamorphic rock
Why: because o know
