Concepts in Chemistry
When you measure something, the significant digits include all the certain and uncertain digits in the measurement. Together, these digits usually reveal reliable information, but with the last …
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When we measure something, we are finding in standard units some property of that object or system. An error is the difference between our measured value and the true value of that property. …
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A limiting reactant is a chemical in short supply during a chemical reaction. Usually, we can run a chemical reaction in one of two ways. The first is: using the exact mole amounts (stoichiometric) …
You may have noticed that when you connect your toaster to electricity, as the wire in the toaster gets heated, it glows red as it emits red light, and as its temperature continues to rise, it glows …
To determine the charge on an electron, Millikan sprayed tiny oil droplets into the top compartment of a drum. Here is an illustration of the drum and its compartments: As you can see, the drum …
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The electromagnetic spectrum displays the components of light arranged according to their wavelengths. The spectrum usually consists of both visible and invisible light. Together, they are called …
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