Calculate the molarity of each of the following solutions

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Calculate the molarity of each of the following solutions

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Periodic Trend: Electron Affinity. Arrhenius Acids and Bases.

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In preceding sections, we focused on the composition of substances: samples of matter that contain only one type of element or compound. However, mixtures—samples of matter containing two or more substances physically combined—are more commonly encountered in nature than are pure substances. Similar to a pure substance, the relative composition of a mixture plays an important role in determining its properties. The relative amount of the active ingredient in a medicine determines its effectiveness in achieving the desired pharmacological effect. In this section, we will describe one of the most common ways in which the relative compositions of mixtures may be quantified. We have previously defined solutions as homogeneous mixtures, meaning that the composition of the mixture and therefore its properties is uniform throughout its entire volume. Solutions occur frequently in nature and have also been implemented in many forms of manmade technology. We will explore a more thorough treatment of solution properties in the chapter on solutions and colloids, but here we will introduce some of the basic properties of solutions. The relative amount of a given solution component is known as its concentration. Often, though not always, a solution contains one component with a concentration that is significantly greater than that of all other components.

Calculate the molarity of each of the following solutions

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Another way of expressing concentration is to give the number of moles of solute per unit volume of solution. Of all the quantitative measures of concentration, molarity is the one used most frequently by chemists. Molarity is defined as the number of moles of solute per liter of solution.

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