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mr Goodwill [35]
3 years ago
14

Which is the correct Lewis structure for OBr?

Chemistry
1 answer:
____ [38]3 years ago
3 0

Answer:Covalent compound (I,C,W,H are nonmetals)

Valence of I: 7

Valence of C (C must form an octet): 4

Valence of W: 6

Valence of H: 1

Total valence electrons: 19

Molar mass: 324.77 g/mol

Explanation:

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when 45 grams of copper (ii) carbonate are decomposed with heat how many grams of carbon dioxide will be produced
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Answer:

16.02 g

Explanation:

the balanced equation for the decomposition of CuCO₃ is as follows

CuCO₃ --> CuO + CO₂

molar ratio of CuCO₃ to CO₂ is 1:1

number of CuCO₃ moles decomposed - 45 g / 123.5 g/mol = 0.364 mol

according to the molar ratio

1 mol of CuCO₃ decomposes to form 1 mol of CO₂

therefore 0.364 mol of  CuCO₃ decomposes to form 0.364 mol of CO₂

number of CO₂ moles produced - 0.364 mol

therefore mass of CO₂ produced - 0.364 mol x 44 g/mol = 16.02 g

16.02 g of CO₂ produced

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