23) What is the chemical formula for carbon dioxide?

A CO2
B C2O
C CO2
D 2CO

A. CO2

Explanation:

Carbon dioxide is a colorless gas with a density about 53% higher than that of dry air. Carbon dioxide molecules consist of a carbon atom covalently double bonded to two oxygen atoms. It occurs naturally in Earth's atmosphere as a trace gas.

Formula: CO2

Molar mass: 44.01 g/mol

Boiling point: -78.46 °C

Triple point temperature: -56.6 °C

ChemSpider ID: 274

Soluble in: Water

the number of protons in the nucleus of a given element. has slight luster and conducts electricity at high temperatures like metal.but like a nonmetal,boron is brittle and does not conduct electricity well at low temperatures. in graphite, carbon is a soft,brittle solid.it is reflective,ductile,or malleable.

the answer is c. nacl