The concentration of N2O5 was monitored over time as it decomposed. 2 N2O5 (g) → 4 NO2 (g) + O2 (g) At 300.0 s, the concentration of N2O5 was 2.50×10−2 M. At 800.0 s, the concentration of N2O5 had decreased to 1.55×10−2 M. Calculate the average rate of change of O2 over the time interval from t = 300.0 s to t = 800.0 s.

3 1/4 %

explanation:

metals are good conductor of electricity. it has free electrons on their surface. according to electron pool theory, each atom present in a metal crystal losses all of its valence electron and as a result a pool of free is form. these pool of electrons are free to move and   conduct electricity easily   while making metal as good conductor.

the correct answer is a. the ability of electrons to flow throughout the metal.

if it's not useful, feel free to report for mistake in answer.

b. is the answer hoped i