In 2020, Moderna developed an effective mRNA-based vaccine against COVID-19. The mRNA causes the body to make viral proteins that then elicit a strong immune response. The vaccine consists of a suspension containing 0.25 mg/mL of the mRNA. The required dose of the mRNA is 105.0 μg. What volume of the vaccine suspension must be injected to achieve the required dose of mRNA? Express the volume in milliliters to two significant figures.



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