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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,
2 answers
asked by
Ashish
1,028 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.
1 answer
asked by
sonam
505 views
Chalk contains 3 percent carbon 10 percent calcium and oxygen find the amount in grams of each of these substances in 1 kg
2 answers
asked by
Monika
571 views
Which are the four main elements in all living things?(1 point)
Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
14 answers
asked by
questions .llc
259 views
Which are the four main elements in all living things?(1 point)
Responses oxygen, hydrogen, carbon, and calcium oxygen, hydrogen,
1 answer
17 views
1. Which elements are most abundant in living organisms?
A. hydrogen, carbon, calcium, potassium, oxygen, and phosphorus B.
7 answers
asked by
Elma
10,475 views
95% of organic macromolecules are made up of the following elements:(1 point)
Responses carbon, hydrogen, calcium, iron carbon,
1 answer
31 views
The chemical formula of a substance is CaCO3
What is contained in one molecule this substance? A 1 calcium atom, 1 carbon atom,
1 answer
21 views
Calcium carbonate can break down to form calcium oxide and carbon dioxide.
CaCO3 → CaO + CO2 The oxygen atoms on the product
1 answer
12 views
What is the correct name for the ionic compound, CaO?
? calcium oxygen ? calcium monoxide ? calcium oxide ? oxide calcium ?
1 answer
asked by
emma
30 views