What mass of Mg would have same number of atoms with 6g Ca

Calculate the expected ph values of the buffer systems from the experiments (a, b,c, d), using the henderson- hasselbalch equation, ph-pka+log[a-]/[ha]. use for pka values carbonic acid= 6.37, and acetic acid= 4.75.

Which change to the system wood cause the freely-moving piston to lower?

Is the idea of spontaneous generation supported by redi's experiment? justify your answer in 2-3 sentences?