the molarity of a solution obtained by mixing 750ml of 0.5M HCl with 250ml of 2M HCl will be?
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Answers
Answer:
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Explanation:
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 oxygen in a planet’s atmosphere determines its ability to sustain aerobic life. The relative amounts of iron, carbon, nickel, and other elements in steel (a mixture known as an “alloy”) determine its physical strength and resistance to corrosion. The relative amount of the active ingredient in a medicine determines its effectiveness in achieving the desired pharmacological effect. The relative amount of sugar in a beverage determines its sweetness (see Figure 1). In this section, we will describe one of the most common ways in which the relative compositions of mixtures may be quantified.
Answer:
750 ml of 0.5 M HCl have 0.375 moles.
250 ml of 2 M HCl have 0.5 moles.
Total moles =0.875moles
Total volume =750+250=1000ml=1L
Molarity =
Volume
Moles
=
1
0.875
=0.875M