a solution contains 5 grams of glucose per 100 milliliters. each

1-      A solution contains 5 grams of glucose per 100 milliliters. Each mole of glucose
weighs 180 grams. How many moles are there in 200 milliliters of the glucose solution? 

2-      A light-year is a measure of length equal to the distance that light travels in 1 year. Compute the conversion factor between light-years and meters, and find the distance to the star Proxima Centauri  m in light-years. The speed of light is  m/s. Show your conversion work with the appropriate ratios.

3-      A jogger is going at 12ft/min. How fast is she going in miles per hour?

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