Assuming you have been working on separation of mn2+ from ba2+ explain two different separation schemes for removing ba2+ from your solution. a description of how would you confirm the presence or absence of each ion must be included in your answer.

m=9

step-by-step explanation:

7m+8=71 subtract   8 from 71 which is 63 than divide it by 7m   equal 9.

                             

Answer( precipitate );

The surface of the water droplet is held together by the attraction between molecules. in order for water to flow more easily into these small spaces, you need to decrease its surface tension. you can do this by adding soap, which is a surfactant (a material that decreases the surface tension of a liquid).