Burning 1.43 g of methane [CH4(g), molar mass 16.0 g/mol] with excess O2 raised the temperature of 250 g of water in a bomb calorimeter from 22°C to 98°C. Calculate the molar enthalpy of the combustion of methane.

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.

Design techniques and materials that reduce the negative environmental impact of a structure are referred to as

Draw the lewis dot structure for each of the following polyatomic ions