Part A
2 answers:
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Step
<u>find the mass of a single washer</u>
Divide the total mass by the number of washers
Step
<u>Convert kg to mg</u>
we know that
so
therefore
<u>the answer is</u>
1. Pure substances cannot be separated into any other kinds of matter, while a mixture is a combination of two or more pure substances.
2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).
3. A pure substance is pure, while a mixture is impure.
2. A pure substance has constant physical and chemical properties, while mixtures have varying physical and chemical properties (i.e., boiling point and melting point).
3. A pure substance is pure, while a mixture is impure.