20 gm of a solution saturated with a salt at 80°C is cooled to 30°C. How much of the salt will crystallize out of the solution, If its solubilities at 80°C & 30°C are 100 & 25 respectively?​

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.

How many molecules are found in 1.32 mol of nacl?

Which statement describes james chadwick’s discovery.