Heterogeneous mixture are often separated by

When you mate two plants together the terms is called? answer it fast as possible plz! i have a test tomorrow!

Which buffer would be better able to hold a steady ph on the addition of strong acid, buffer 1 or buffer 2? explain. buffer 1: a solution containing 0.10 m nh4cl and 1 m nh3. buffer 2: a solution containing 1 m nh4cl and 0.10 m nh3

If anyone would be able to me out with these three questions it would be these are from the chem 2202 course.