a container hold 3 gases oxygen helium and carbon dioxide the partial pressures of the 3 gases are 4.00atm of Oxygen 10amt of helium and the total pressure is 27 atm. what is the pressure carbon dioxide​

The covalent compound acetylene, which is the fuel of the oxyacetylene torch used by welders, has the molecular formula c2h2. the covalent compound benzene, a commercial solvent, has the molecular formula c6h6 each of these covalent compounds contains carbon and hydrogen atoms in a one-to-one ratio. would it be correct to write the chemical formulas of each as ch? explain.