Use the appropriate standard reduction potentials below to determine the equilibrium constant at 386 K for the following reaction under acidic conditions. 4H+(aq) + MnO2(s) + 2Fe2+ (aq) → Mn2+(aq) + 2Fe3+ (aq) + 2H2O(l)

Observation and experimentation have led many scientists to accept a theory about the origin of the universe. this theory is called the big bang theory. scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. what makes this a scientific theory? (2 points)

What is the percentage of hydrogen in c2h4

Astudent completes a titration by adding 12.0 milliliters of naoh(aq) of unknown concentration to 16.0 milliliters of 0.15 m hcl(aq). what is the molar concentration of the naoh(aq)? 1)5.0 m 2)0.20 m 3)0.11 m 4)1.1 m