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vlada-n [284]
3 years ago
7

Pick 1 answer, please help!

Chemistry
2 answers:
nasty-shy [4]3 years ago
4 0
The the answer is: C
Alexeev081 [22]3 years ago
3 0
The correct answer is option c
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How much CaCO3 would have to be decomposed to produce 247 g of CaO
vovangra [49]

441 g CaCO₃ would have to be decomposed to produce 247 g of CaO

<h3>Further explanation</h3>

Reaction

Decomposition of CaCO₃

CaCO₃ ⇒ CaO + CO₂

mass CaO = 247 g

mol of CaO(MW=56 g/mol) :

\tt mol=\dfrac{mass}{MW}\\\\mol=\dfrac{247}{56}\\\\mol=4.41

From equation, mol ratio CaCO₃ : CaO = 1 : 1, so mol CaO :

\tt \dfrac{1}{1}\times 4.41=4.41

mass CaCO₃(MW=100 g/mol) :

\tt mass=mol\times MW\\\\mass=4.41\times 100\\\\mass=441~g

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3 years ago
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Answer question 13. What is the mechanical advantage of a lever that can lift a 100 N load with a input force of 20 N
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An example of gaining potential energy
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