CaCO3 --> CaO+ C02 24.80g 13.90g ?
Using the Law of Conservation of Mass, what was the mass of the CO2 produced in the chemical reaction?

he mass of CO2 produced is 3.29*10^-3g.

Explanation:

We know that the reaction goes to completion, so all the methane will be reacted. To find the mass of carbon dioxide used, we can use the number of moles from the above equation, and the molecular weight of CO2 (= 44.009 g/mol).

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

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