Mass percent of carbon in carbon dioxide is-

What is the mass percent of carbon in carbon dioxide ?

What is the mass per cent of carbon in carbon dioxide?

What is the mass per cent of carbon in carbon dioxide?

One litre of oxygen was added to one litre of a mixture of carbon monoxide and carbon dioxide. When the whole mixture was burnt, its volume decreased to 1.8 litres. Determine the volume percent of carbon monoxide and carbon dioxide in the mixture initially .

Hybridisation of carbon atom in carbon dioxide is