I am so lost please help

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.

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

The arrangement of particles is most ordered in a sample of