Which pair shares the same empirical formula? C2H4 and C6H6 C6H6 and C3H3 CH2 and C6H6 CH and C2H4

Calculate the h3o+ concentration in a solution of acetic acid if the concentration of molecular acetic acid present at equilibrium is 9.97x10^-3 m and k for the dissociation is 1.86x10^-5. ch3cooh(aq)+h2o(> h3o^+(aq)+ch3coo^-(aq)

Which change in temperature is the smallest? a change of 1 thomson degree a change of 1 kelvin degree a change of 1 fahrenheit degree a change of 1 celsius degree

Chlorophyll a had the molecular formula c55h72mgn4o5 how many atoms are in this molecule