Need 1
A solution of a Solid A is mixed with a few drops of barium nitrate solution
and a white precipitate forms. A dilute hydrochloric acid is then added
(with a little heat) and the white precipitate does not dissolve. Which of the
following anions was in the original solid (Solid A)? *

If equal masses of the listed metals were collected , which would have a greatest volume ? a. aluminum 2.70,b.zinc7.14,c.copper 8.92,d.lead 11.34

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

How could a student test the effect of removing heat from a gas that is stored in a sealed container? what must occur in order for matter to change states?