When 12.0\text{ g} of carbon reacts completely with 32.0\text{ g} of oxygen gas, carbon(IV… — JAMB UTME

When $12.0\text{ g}$ of carbon reacts completely with $32.0\text{ g}$ of oxygen gas, carbon(IV) oxide ( $\text{CO}_2$ ) is formed. According to the Law of Conservation of Mass, what is the total mass of carbon(IV) oxide produced?

$44.0\text{ g}$ Answer
B
$20.0\text{ g}$
C
$22.4\text{ g}$
D
$16.0\text{ g}$

Answer

44.0\text{ g}

of carbon(IV) oxide is produced.

The Law of Conservation of Mass dictates that mass is neither created nor destroyed in a chemical reaction. Therefore, the total mass of carbon(IV) oxide formed is equal to the sum of the mass of carbon (

12.0\text{ g}

) and oxygen (

32.0\text{ g}

), which gives

44.0\text{ g}

Step-by-Step Solution

Identify the relevant law of chemical combination.

Law of Conservation of Mass states that total mass of reactants equals total mass of products.

Matter cannot be created or destroyed during a chemical reaction.

Sum the masses of all reactants.

Mass of

\text{CO}_2 = 12.0\text{ g (carbon)} + 32.0\text{ g (oxygen)} = 44.0\text{ g}

Both carbon and oxygen combine completely to yield carbon(IV) oxide.

Key Concept

Law of Conservation of Mass

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