What are the concentrations of acetic acid (pKa = 4.76) and acetate in a buffer solution of 0.20 M at pH 4.6? Enter your answer to two significant figures

Determine the mass of fuel required for the expected energy consumption in the united states for the next ten years. energy use per person per year in the united states = 3.5 x 1011joules base calculations on current population of 310,000,000.

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing

Draw the skeletal structures of two different molecules that are each made of 5 carbon atoms and 12 hydrogen atoms.