a student tried to separate a mixture of sand and red-colored water using a suction filtration apparatus. From a mixture of 10.0g of sand and 90.0g of water, the student recovered 9.5g of sand. what was the percent recovery of sand from the mixture?
the sand, originally white, was a light pink after drying. How could the student improve the color of the sand further?
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To calculate the percent recovery of sand from the mixture, you need to find the ratio of the mass of the recovered sand to the initial mass of sand in the mixture, and then multiply by 100.
1. Calculate the initial mass of sand in the mixture:
Initial mass of sand = 10.0g
2. Calculate the percent recovery of sand:
Percent recovery = (Mass of recovered sand / Initial mass of sand) * 100
Percent recovery = (9.5g / 10.0g) * 100
3. Calculate the percent recovery:
Percent recovery = 95%
To improve the color of the sand further, you can try the following steps:
1. Wash the sand: Rinse the sand several times with clean water to remove any remaining colored water or residue.
2. Dry the sand properly: Ensure that the sand is completely dried before storing it. Use an oven or a clean, flat surface that gets good airflow to aid in the drying process. Make sure it is completely dry.
3. Sieve the sand: Pass the dried sand through a fine mesh sieve to remove any remaining impurities or small particles.
4. Store it properly: Store the sand in a clean, airtight container to prevent any moisture or contamination from affecting the color.
Following these steps should help improve the color of the sand further.
To calculate the percent recovery of sand from the mixture, we need to determine the weight of sand that was initially present and the weight of sand that was recovered.
Given:
Initial weight of sand = 10.0g
Weight of water = 90.0g
Weight of recovered sand = 9.5g
To find the percentage recovery of sand, use the formula:
Percentage Recovery = (Recovered weight of sand / Initial weight of sand) * 100
Substituting the given values:
Percentage Recovery = (9.5g / 10.0g) * 100 = 95%
Therefore, the percent recovery of sand from the mixture is 95%.
Now, let's address the second part of the question: how the student could improve the color of the sand further, from light pink to white.
1. Rinse the sand with water: After separating the sand from the mixture, rinse it thoroughly with clean water. This will help remove any remaining impurities or coloration left in the sand.
2. Dry the sand properly: Ensure that the sand is completely dried before storage. You can spread it evenly on a flat surface and let it air dry or use an oven or heating source to speed up the drying process. Make sure the sand is not exposed to any moisture during the drying process.
3. Use a further purification process: If rinsing and drying the sand do not remove all the coloration, you can consider using a purification process like leaching. Leaching involves soaking the sand in water or a solvent that can help remove the color compounds. After leaching, rinse and dry the sand again to ensure its purity.
4. Use a filter: If the coloration is due to very fine particles or dissolved substances, you can try passing the sand through a fine filter or mesh to remove these unwanted particles.
Remember, the effectiveness of these methods may vary depending on the nature and source of the coloration in the sand, so it might require some experimentation to achieve the desired outcome.