chalk contains 40% calcium, 12% carbon and rest oxygen. what is the amount of oxygen in 8kg of chalk?
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rounakpal:
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paying income tax at 10% per annum ₹180000 was left with a man. what is his total income?
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Answered by
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Percentage of calcium equals 40 percent...
Percentage of carbon equals 12 percent...
Total percent of calcium and carbon equals 40 + 12 equals 52 percent....
Remaining percentage of oxygen equals 100 - 52 equals 48 percent....
Weight of chalk equals 8 grams....
Amount of oxygen in 8 grams of chalk equals 48 percent of 8 which is equal to 3.84 grams of oxygen...
Hence an eight gram chalk has 3.84 grans of oxygen if the percentage of oxygen. Is 48 %.......
.....hope this helps..... Do rate and Mark as brainiest if my answer helps you......comment if you have any doubts......
Percentage of carbon equals 12 percent...
Total percent of calcium and carbon equals 40 + 12 equals 52 percent....
Remaining percentage of oxygen equals 100 - 52 equals 48 percent....
Weight of chalk equals 8 grams....
Amount of oxygen in 8 grams of chalk equals 48 percent of 8 which is equal to 3.84 grams of oxygen...
Hence an eight gram chalk has 3.84 grans of oxygen if the percentage of oxygen. Is 48 %.......
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