Question
Asked Oct 8, 2019

suppose 1.57 g of Ca is heated in the air. what is the theoretical amount of CaO that will be produced?

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Expert Answer

Step 1

The number of moles of a given chemical species refers to the ratio of mass to the molar mass. The mathematical formula to calculate the number of moles is as follows:

Mass
Number of moles=.
Molar mass
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Mass Number of moles=. Molar mass

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Step 2

The balanced chemical equation for this reaction is as follows:

2Ca (s)+ O2(g)
2CaO (s)
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2Ca (s)+ O2(g) 2CaO (s)

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Step 3

The atomic mass of Ca is 40 g/mol.

The mass of Ca which is heated in the air is given to...

Mass
Number of moles.
Molar mass
1.57 g
40 g/mol
0.03925 moles
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Mass Number of moles. Molar mass 1.57 g 40 g/mol 0.03925 moles

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Chemistry

Inorganic Chemistry

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