Convert 0390 Ng to Milligrams and Express the Answer in Scientific

question 9

Multiple Choice

Convert 0.390 ng to milligrams and express the answer in scientific notation using the correct number of significant figures.

• A) 3.90 × 10^-5 mg
• B) 3.90 × 10^-7 mg
• C) 3.9 × 10^-7 mg
• D) 0.390 × 10^-8 mg
• E) 0.390 × 10^-7 mg

---

Definitions:

USMCA

The United States-Mexico-Canada Agreement, a free trade agreement between these three countries that replaced NAFTA.

NAFTA

The North American Free Trade Agreement is a treaty between Canada, Mexico, and the United States that eliminated most tariffs on trade between these nations, aiming to increase economic integration.

Trade Agreement

A treaty between two or more countries to outline how they will work together to ensure mutual benefit in trade, often involving tariff reductions, import quotas, and other trade incentives.

Currency Fluctuations

Variations in the exchange rate of one currency against another, influencing international trade and economic conditions.