Question

Which of the following represents the smallest mass? I.) 23 cg II.) 2.3 x 10-3 μg III.) 0.23 mg IV.) 0.23 g V.) 2.3 x 10-2 kg​

Answer 1

The smallest mass among the choices is Choice (ii):2.3 x 10-3 μg

This is so because, the prefix μ signifies a factor of 10^-6.

For choice I:

• 23 cg means 23 centigrams

• In essence = 0.23grams

For choice II:

• 2.3 × 10-3 μg means 2.3 × 10-9 grams

For choice III:

• 0.23 mg means 0.23 × 10-3 grams

For choice IV:

• 0.23 grams simply means 0.23grams

For choice V:

• 2.3 × 10-2 kg means 23 grams

Ultimately, Choice II represents the smallest mass.

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