Buffer capacity is a measure of a buffer solution's resistance to changes in pH as strong acid or base is added. Suppose that you have 165 mL of a buffer that is 0.300 M in both hydrofluoric acid (HF) and its conjugate base (F−) . Calculate the maximum volume of 0.470 M HCl that can be added to the buffer before its buffering capacity is lost.

How many moles of air are there in a human lung with a volume of 2.4 l at stp? explain your answer

Which statement describes james chadwick’s discovery.

Look at the spectrums of a star moving towards earth and a motionless star. which of these is a correct inference that can be draw from the observation of the two spectrums? (2 points) the spectrum of a motionless star is difficult to be viewed separately using oridinary telescopes. the spectrum of a motionless star is identical to the spectrum of a star which moves towards earth. the spectrum of a star shifts towards the red region when the star moves towards earth. the spectrum of a star shifts towards the blue region when the star moves towards earth.