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

Question

Quizplus · Accepted Answer

To convert nanograms (ng) to milligrams (mg), you need to know that 1 ng = 10^-6 mg. Therefore, 0.390 ng = 0.390 × 10^-6 mg = 3.90 × 10^-7 mg, which matches option B when expressed in scientific notation with the correct number of significant figures.

Convert 0390 Ng to Milligrams and Express the Answer in Scientific