Chalk contains calcium,carbon and oxygen

  1. Chalk contains calcium,carbon and oxygen in the ratio 10:3:12.Find the percentage of carbon in a chalk and in a stick of chalk,
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    2. Ashish asked by Ashish
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  2. chalk contains 3% of carbon,10%of calcium & 12%of oxygen.find the amount in grams of each of these substancein 1kg of chalk.
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    2. sonam asked by sonam
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  3. Chalk contains 3 percent carbon 10 percent calcium and oxygen find the amount in grams of each of these substances in 1 kg
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    2. Monika asked by Monika
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  4. Which are the four main elements in all living things?(1 point)Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
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    2. questions .llc asked by questions .llc
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  5. Which are the four main elements in all living things?(1 point)Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
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  6. 1. Which elements are most abundant in living organisms?A. hydrogen, carbon, calcium, potassium, oxygen, and phosphorus B.
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    2. Elma asked by Elma
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  7. 95% of organic macromolecules are made up of the following elements:(1 point)Responses carbon, hydrogen, calcium, iron carbon,
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  8. The chemical formula of a substance is CaCO3What is contained in one molecule this substance? A 1 calcium atom, 1 carbon atom,
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  9. Calcium carbonate can break down to form calcium oxide and carbon dioxide.CaCO3 → CaO + CO2 The oxygen atoms on the product
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  10. What is the correct name for the ionic compound, CaO?? calcium oxygen ? calcium monoxide ? calcium oxide ? oxide calcium ?
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    2. emma asked by emma
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