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1) chalks contain calcium carbon and oxygen bin the ratio of10:3:12 find the percentage of carbon in chalk? 2) if in a stick of chalk carbon is 3 get what is the weight of chalk stick?
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1) chalks contain calcium carbon and oxygen bin the ratio of10:3:12 fi...
Calculating the Percentage of Carbon in Chalk
To find the percentage of carbon in chalk, we start with the given ratio of components: Calcium (Ca) : Carbon (C) : Oxygen (O) = 10 : 3 : 12.
- Total parts in the ratio:
- 10 + 3 + 12 = 25 parts
- Calculating the percentage of Carbon:
- The ratio of Carbon is 3 parts.
- Percentage of Carbon = (Carbon parts / Total parts) * 100
- Percentage of Carbon = (3 / 25) * 100 = 12%
Thus, the percentage of carbon in chalk is 12%.
Finding the Weight of the Chalk Stick
Given that the amount of carbon in a stick of chalk is 3 grams, we can determine the total weight of the chalk stick using the percentage calculated above.
- Using the percentage of Carbon:
- We know that Carbon constitutes 12% of the total weight of the chalk stick.
- Setting up the equation:
- Let the total weight of the chalk stick be W grams.
- According to our calculation: 12% of W = 3 grams.
- Calculating the total weight:
- Converting the percentage to a decimal: 12% = 0.12.
- Therefore, 0.12W = 3 grams.
- To find W: W = 3 grams / 0.12 = 25 grams.
Hence, the weight of the chalk stick is 25 grams.
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1) chalks contain calcium carbon and oxygen bin the ratio of10:3:12 find the percentage of carbon in chalk? 2) if in a stick of chalk carbon is 3 get what is the weight of chalk stick?
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