When heated, calcium carbonate goes through a chemical reaction, and produces calcium oxide (quick lime) powder and carbon
dioxide gas. a chemist performed this reaction in a lab and found that the mass of the calcium oxide (quick lime) was less than the
mass of the calcium carbonate. what is the reason behind this decrease in mass?
a. the carbon dioxide molecules produced were unstable and lighter in mass.
b. calcium oxide crystals produced break up at room temperature, leading to the difference in
c. carbon dioxide is produced, and as a gas, it was not captured to measure its mass.
d.
the calcium oxide crystals produced were unstable and lighter in mass.
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Carbon dioxide is produced, and as a gas, it was not captured to measure its mass.

Explanation:

explanation:

metals have excess of electrons whereas non-metals have deficiency of electrons. thus, in order to gain stability metals easily donate their electrons to the non-metals.

for example, electronic configuration of sodium is and electronic configuration of phosphorous is .

when a phosphorous atom and sodium atom combine together then sodium will donate is extra one electron to the phosphorous atom. as a result there will be formation of ionic bond between sodium and phosphorous.

the reaction will be as follows.

there, are three sodium sodium atoms and each of them will donate its one extra electron to phosphorous atom. thus, the sub-shell of phosphorous gets completely filled.  

thus, we can conclude that electrons are transferred from atoms of sodium to atoms of phosphorous. this transfer makes the sodium atoms donate one electron and the phosphorous atoms to gain one electron. as a result, the sodium and phosphorus atoms strongly attract each other.

atomic number of carbon is 6

electronic configuration of carbon is 1s²2s²2p²

orbital diagram of c is as shown here in the image.