What energy conversion is taking place when working of a hair dryer

Why does a red shoe appear red in daylight

Based on the equation and the information in the table, what is the enthalpy of the reaction?

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.