How many moles are present in 1 micromole?

• A. 1 × 10^{-3} moles
• B. 1 × 10^{-6} moles
• C. 1 × 10^{6} moles
• D. 1 × 10^{-9} moles

Answer: (B)

Verified step by step guidance

1. Understand the meaning of the prefix 'micro-' in chemistry, which denotes a factor of \$10^{-6}$.
2. Recognize that 1 micromole (abbreviated as 1 \(\mu\)mol) means 1 times \$10^{-6}$ moles.
3. Write the conversion explicitly: 1 micromole = \(1 \times 10^{-6}\) moles.
4. Compare this value with the given options to identify the correct one.
5. Conclude that the number of moles in 1 micromole is \(1 \times 10^{-6}\) moles.