When 0. 25 g of the organic compound naphthalene are burned in a bomb calorimeter, the temperature of the water in the calorimeter increases from 24. 00°C to 26. 43 °C. The calorimeter's heat capacity is 4. 13 kJ/°C. How much heat (q_{rxn}) in kilojoules is released by the combustion of the naphthalene?.

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.

Can someone me with questions 12 and 13 plz.

Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive