The metric system is a decimal-friendly system. The Greek prefixes that it uses are all some power of 10 greater or smaller than the base unit that they modify. As such, the conversion from one metric unit to another involves the movement of a decimal point some number of places. Looked at another way, all conversions involve multiplying or dividing by 10 raised to some power.
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Metric Conversions - help15
There are three versions of this question. Each version involves the same type of unit conversion. Here is one of the versions.
Version 1:
Convert 2.8 µg to g.

