Հարց 57

Which statements correctly distinguish elemental carbon from carbon dioxide at 25 degrees Celsius and 1 atmosphere? Select all that apply.

Elemental carbon is solid.Ճիշտ պատասխան
Elemental carbon must be gaseous because carbon dioxide is a gas.
Every carbon-containing substance has carbon's state.
A gaseous carbon compound does not make elemental carbon gaseous.Ճիշտ պատասխան

Բացատրություն

Elemental carbon is solid at the stated conditions, and the gas state of carbon dioxide belongs to that compound. A compound can have physical properties unlike those of its constituent elements, so carbon dioxide does not determine carbon's state.

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