If 137.2 mL He balloon rises in altitude from sea-level where the pressure is 1.00 atm to 893ft. where the pressures is 349 torr, what is the volume of the balloon at this altitude

In an oxidation-reduction reaction, oxidation is what happens when a reactant

In 1901, thomas edison invented the nickel-iron battery. the following reaction takes place in the battery. fe(s) + 2 nio(oh)(s) + 2 h2o(l) fe(oh)2(s) + 2 ni(oh)2(aq) how many mole of fe(oh)2, is produced when 5.35 mol fe and 7.65 mol nio(oh) react?

Predict whether the changes in enthalpy, entropy, and free energy will be positive or negative for the boiling of water, and explain your predictions. how does temperature affect the spontaneity of this process?