Imagine that you took a road trip. Based on the information in the table, what was the average speed of your car? Time Mile marker 3:00 pm 21 8:00 pm 267 Express your answer to three significant figures and include the appropriate units. Use mi as an abbreviation for miles, and h for hours, or mph can be used to indicate miles per hour. • View Available Hint(s) HA ? 56.2 mph

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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.