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Chalk contains calcium,carbon and oxygen

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. asked by Ashish
3. 1,054 views
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. asked by sonam
3. 529 views
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. asked by Monika
3. 599 views
Which are the four main elements in all living things?(1 point)Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
1. 14 answers
2. asked by questions .llc
3. 274 views
Which are the four main elements in all living things?(1 point)Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
1. 1 answer
2. 27 views
1. Which elements are most abundant in living organisms?A. hydrogen, carbon, calcium, potassium, oxygen, and phosphorus B.
1. 7 answers
2. asked by Elma
3. 10,501 views
95% of organic macromolecules are made up of the following elements:(1 point)Responses carbon, hydrogen, calcium, iron carbon,
1. 1 answer
2. 43 views
The chemical formula of a substance is CaCO3What is contained in one molecule this substance? A 1 calcium atom, 1 carbon atom,
1. 1 answer
2. 29 views
Calcium carbonate can break down to form calcium oxide and carbon dioxide.CaCO3 → CaO + CO2 The oxygen atoms on the product
1. 1 answer
2. 22 views
What is the correct name for the ionic compound, CaO?? calcium oxygen ? calcium monoxide ? calcium oxide ? oxide calcium ?
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2. asked by emma
3. 44 views