Ireally don't
if the thermal energy of the system increases by 400 j, and 1,100 j of heat were added to the system, how much work did the system do?

700 j

400 j

1,100 j

1,500 j

What is the volume occupied by 10.0 dm3 of gas at standard pressure after it has been compressedat constant temputure to 500.0 kpa?

What is the relation between concentration of reactants and the rate of chemical 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.