2 years ago

25 Points Please Help ASAP! Will Mark Brainliest If All Are Answered!!

Chemistry

1 answer:

xz_007 [3.2K]2 years ago

4 0

Answer:

c because it is a group of elements

Explaation:

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A 3.0 L solution contains 73.5 g of H2SO4. Calculate the molar concentration of the solution.

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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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How can we separate the components of a compound?

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