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Chem 109 Week 1 Exercises

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Week 1 Exercises

Prepare written answers to the following exercises:

1. As a field agent, you must determine the cause of a disease outbreak in the Los Angeles, California, area.

You discover that the disease originates from contaminated halibut. You write a report to your supervisor, which includes a description of the physical dimensions of the fish (length and weight). Your supervisor asks that you send the fish and a report about the fish (length and weight) to the Pasteur Institute in Paris, France. Because France uses the metric system, you must convert the figures for length and weight.

Complete the following chart by converting the inches and pounds to centimeters and kilograms:

|Physical measurements of specimen |
|Length (in inches) = 36 |Length (in centimeters) |
| |=91.44cm |
|Weight (in pounds) = 20 |Weight (in kilograms) =9.07kg |

2. State the law of mass and energy conservation. Describe how you might demonstrate this law.

The law of conservation of energy, is when the total amount of energy remains constant, but can change forms from one to another. The law of conservation of mass is when the total amount of mass remains constant, even if you change the shape or the chemical make up. I would demonstrate this law by proving how the energy and mass stays constant.

3. Adapted from Exercise 116 in Ch. 3 of Introductory Chemistry:

Global warming refers to the rise in average global temperature due to the increased concentration of certain gases, called greenhouse gases, in our atmosphere. Earth’s oceans, because of their high heat capacity, can absorb heat and therefore act to slow down global warming.

Imagine that you have a container of

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