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The Mixture Rule states that when two different mixtures are combined, the overall concentration of a component can be found using the weighted average of the concentrations of the individual mixtures based on their respective quantities. |
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If a solution contains 20% salt and another solution contains 50% salt, how can you find the percentage of salt in the mixture if you combine equal volumes of both solutions? |
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When equal volumes are mixed, the total salt content is the average of the two percentages: (20% + 50%) / 2 = 35%. Therefore, the mixture contains 35% salt. |
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A bottle contains 40 liters of a 25% alcohol solution. How much pure alcohol is in the bottle? |
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To find the amount of pure alcohol, multiply the total volume by the percentage of alcohol: 40 liters * 25% = 10 liters of pure alcohol. |
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You have two mixtures: Mixture A has 30% sugar and Mixture B has 70% sugar. How much of each mixture do you need to create a new mixture that is 50% sugar? |
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Let x be the amount of Mixture A and y be the amount of Mixture B. Using the allegation method, we can set up the equation: (70% - 50%) / (50% - 30%) = y / x. This simplifies to 1:1, meaning you need equal amounts of both mixtures. |
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If you mix 10 liters of a 10% salt solution with 15 liters of a 30% salt solution, what is the concentration of salt in the resulting mixture? |
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First, calculate the total salt in each solution: 10 liters * 10% = 1 liter of salt and 15 liters * 30% = 4.5 liters of salt. Combined, there are 1 + 4.5 = 5.5 liters of salt in 25 liters of total mixture. The concentration is (5.5 / 25) * 100% = 22%. Therefore, the resulting mixture has a 22% salt concentration. |
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The Allegation Method is a technique used to determine the ratio in which two or more ingredients at different prices or concentrations must be mixed to achieve a desired concentration. It involves calculating the differences between the concentrations and using those differences to find the ratio. |
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If you want to mix 5 liters of a 40% solution with a 60% solution to obtain a 50% solution, how much of the 60% solution do you need? |
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Using the allegation method, set up the equation: (60% - 50%) / (50% - 40%) = y / 5. This simplifies to 10 = y, meaning you need 10 liters of the 60% solution. |
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A mixture contains 30% sugar and 70% water. If you want to make a new mixture with 50% sugar, what should be the ratio of sugar to water? |
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Using the allegation method, set up the equation: (70% - 50%) / (50% - 30%) = y / x. This gives a ratio of 1:1, meaning equal parts of sugar and water should be used to achieve 50% sugar. |
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If a company produces a mixture of two oils, one costing $10 per liter and the other $15 per liter, how do you find the price per liter of a mixture containing equal volumes of both oils? |
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The price per liter of the mixture is the average of the two prices: ($10 + $15) / 2 = $12.50 per liter. |
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A 10-liter solution contains 20% acid. If 5 liters of a 40% acid solution is added, what is the new concentration of acid in the mixture? |
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First, calculate the total acid in the original solution: 10 liters * 20% = 2 liters of acid. Next, calculate the acid in the added solution: 5 liters * 40% = 2 liters of acid. The total acid is 2 + 2 = 4 liters in a total volume of 15 liters. The new concentration is (4 / 15) * 100% = 26.67%. |
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The weighted average allows us to calculate the overall concentration of a mixture by factoring in the proportions of the individual components. It simplifies the process of finding the final concentration based on the individual concentrations and their quantities. |
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What is the formula for calculating the total amount of a substance in a mixture? |
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The total amount of a substance in a mixture can be calculated using the formula: Total Amount = Volume1 * Concentration1 + Volume2 * Concentration2 + ... + VolumeN * ConcentrationN. |
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If a mixture consists of 30% chemical A and 70% chemical B, how much of chemical A is in 200 liters of the mixture? |
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To find the amount of chemical A, multiply the total volume by the concentration of chemical A: 200 liters * 30% = 60 liters of chemical A. |
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When mixing two liquids of different densities, how do you determine the density of the resulting mixture? |
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The density of the resulting mixture can be calculated using the formula: Density = (Mass1 + Mass2) / (Volume1 + Volume2), where Mass is determined by multiplying density by volume for each liquid. |
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If you have a 25% sugar solution and you want to dilute it to a 10% solution, how do you find the amount of water to add? |
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Let x be the amount of water to add. The equation is: 25% * Volume + 0% * x = 10% * (Volume + x). Solving will give you the necessary amount of water to achieve the desired concentration. |