Homework 1.docx - CHM 114 GENERAL CHEMISTRY I FALL 2018...

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CHM 114 GENERAL CHEMISTRY I FALL 2018 TAKE HOME ASSIGNMENT #1 Show work on calculations to get full credit. Keep track of sig figs. 100 points total 1. (10 points) Consider the following processes that are typical of owning/operating a spaceship. Which of these are chemical processes? Which are physical? Explain your answers: a. An asteroid smacks into your ship and dents the passenger door: b. Your space fuel combusts in the presence of pressurized oxygen: c. Dew that collected on your windows freezes as you enter orbit: d. The sandwich you left on the teleporter pad starts to decompose and turn green: e. Your unlucky chief engineer is dissolved by a stowaway alien’s acid drool:
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2. (10 points) Identify the following as either heterogenous mixtures, homogenous mixtures, or pure substances. a. Diamond b. A bowl of Skittles c. A bowl of only orange Skittles d. Lemon juice e. Oil & Vinegar salad dressing f. Air 3. (20 points) You find yourself with a glass of 0.225 moles of Mercury. The density of Mercury is 13.56 g/cm 3 .
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