Most bathroom scales use pounds (lb) to measure weight, thus the best way to approach this problem required the conversion of each given unit to pounds. The average range of an ordinary bathroom scale is **0 − 350 lb**.

- 2.2 lb = 1 kg
- 1 kg = 10
^{3}g - 1 cg = 0.01 g
- 1 mg = 10
^{-3}g

$\mathbf{2}\mathbf{.}\mathbf{0}\mathbf{\times}{\mathbf{10}}^{\mathbf{7}\mathbf{}}\overline{)\mathbf{mg}}\mathbf{\times}\frac{{\mathbf{10}}^{\mathbf{-}\mathbf{3}}\overline{)\mathbf{g}}}{\mathbf{1}\mathbf{}\overline{)\mathbf{mg}}}\mathbf{\times}\frac{\mathbf{1}\mathbf{}\overline{)\mathbf{kg}}}{{\mathbf{10}}^{\mathbf{3}}\mathbf{}\overline{)\mathbf{g}}}\mathbf{\times}\frac{\mathbf{2}\mathbf{.}\mathbf{2}\mathbf{}\mathbf{lb}}{\mathbf{1}\mathbf{}\overline{)\mathbf{kg}}}$

Which of the following weights would you expect to be suitable for weighing on an ordinary bathroom scale?

a. 5.5 × 10^{8} dg

b. 2.0 × 10^{7} mg

c. 5 × 10^{ 4} kg

d. 4 × 10^{6} cg

e. 2500 μg

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Metric Prefixes concept. You can view video lessons to learn Metric Prefixes. Or if you need more Metric Prefixes practice, you can also practice Metric Prefixes practice problems.

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Our data indicates that this problem or a close variation was asked in Chemistry: The Central Science - Brown 13th Edition. You can also practice Chemistry: The Central Science - Brown 13th Edition practice problems.