1. Based on the given combining ratio, carbon was assigned an atomic mass of approximately 12 and oxygen an atomic mass of approximately 16, establishing a relative scale for atomic masses.

    Based on the given combining ratio, carbon was assigned an atomic mass of approximately 12 and oxygen an atomic mass of approximately 16, establishing a relative scale for atomic masses.

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  2. Initially, the atomic mass unit (u) was defined as one-twelfth the mass of a carbon-12 atom. This definition provided a standard reference for comparing the masses of other atoms and establishing their atomic masses.

    Initially, the atomic mass unit (u) was defined as one-twelfth the mass of a carbon-12 atom. This definition provided a standard reference for comparing the masses of other atoms and establishing their atomic masses.

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  3. The modern unit of atomic mass, according to the latest IUPAC recommendations, is the unified atomic mass unit (u), where 1 unified atomic mass unit is defined as 1/12 of the mass of a carbon-12 atom.

    The modern unit of atomic mass, according to the latest IUPAC recommendations, is the unified atomic mass unit (u), where 1 unified atomic mass unit is defined as 1/12 of the mass of a carbon-12 atom.

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  4. The combining ratio between carbon and oxygen is expressed in terms of mass as the ratio of the masses of carbon to oxygen atoms in a compound. For example, in carbon dioxide (CO2), it is 12:32.

    The combining ratio between carbon and oxygen is expressed in terms of mass as the ratio of the masses of carbon to oxygen atoms in a compound. For example, in carbon dioxide (CO2), it is 12:32.

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  5. The experimental observation that led to the determination of the combining ratio between carbon and oxygen in carbon monoxide was the production of a single compound with a consistent mass ratio of approximately 12 grams of carbon to 16 grams of oxygen.

    The experimental observation that led to the determination of the combining ratio between carbon and oxygen in carbon monoxide was the production of a single compound with a consistent mass ratio of approximately 12 grams of carbon to 16 grams of oxygen.

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