40 ! 8 which equation represents what happens when a small amount of strong base is added to the buffer? oh- + a- a2- + h2o oh- + ha a- + h2o h3o+ + a- ha + h2o h3o+ + ha h2a+ + h2o

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.

Which of the following would be an accurate picture of the earth during the summer time of the northern hemisphere?

1) which of the following is the best example of a physical change? a) sugar dissolving in tea b) firefly glowing 2) in the combustion of ethane, what is/are the reactants? c2h6 + o2 ==> co2 + h2o a) c2h6 and o2 b) co2 and c2h6