Ratios in Chemistry Calculations

We use ratios in a variety of common calculations in chemistry. One that you will undoubtedly also encounter in engineering is the need to convert between units of different sizes. Example Problem 1.5 introduces this type of manipulation. 

We need to establish a ratio that relates nanometers and meters. Then we can use that ratio to determine the answer. 

We can write this as a ratio. Because we want to comtvt from nm to m, we ll need m in the numerator and nm in the denominator. 

Writing units on all quantities involved helps ensure that we use the correct ratio. Even if we aren t familiar with the typical wavelengths of light, we can still check that the answer makes sense. Because nanometers are much smaller than meters. 

Large amounts of electrical power, measured in watts (W), are used to produce aluminum from ore. If a production plant uses 4.3 GW in a certain period of time, how many W are used  

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Ratios in Chemistry Calculations Conceptual Chemistry Problems Visualization in Chemistry... 

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