Write the oxidation states in the spaces underneath the underlined elements and suggest whether the underlined atoms or ions have undergone oxidation or reduction in each of the following equations

Cl2 + 2KBr—>Br2 + 2KCl
—— —

PbO + H2 —>Pb + H2O
—- —-

What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?

Butane gas reacts with oxygen gas to give carbon dioxide gas and water vapor (gas). if you mix butane and oxygen in the correct stoichiometric ratio, and if the total pressure of the mixture is 390 mmhg, what is the pressure (in mmhg) of water vapor after the reaction is completed (temperature and volume do not change).

How many liters of water can be produced from 5.0liters of butane gas at stp, assuming excess oxygen? c4h10(g) + 02(g) → co2 (e) + h2o (g)