Having trouble with conversion factors. The question says write conversion factors ( as ratios) for  a)kilometers in 1 mile b) Liters in 1 cubic foot c) grams in one ounce I need to understand exactly where i get the conversions from.  One of the questions I looked up in the book said to do yards in a meter and the answer is 1.0936/1m. The conversion i see in the book says 1m=1.094 yd=39.36 in These problems come out of Chemistry Atoms First 2nd edition Chapter 1

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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.