One vial of Anovax vaccine contains an unknown mass of vaccine dose. It was diluted to 20.0 mL. A 25.0-μL aliquot was taken and was further diluted to 2.00 mL. Another 1.00- mL aliquot was taken and was diluted to 1.8 mL. Finally, this 1.8mL was found to have enough vaccine for five 20-μg doses of vaccine. a. How many milligrams of Anovax vaccine is present in the first vial?

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Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.