The substance that would be expected to form a precipitate as a product of a chemical reaction is *
1 poi
1. silver hydroxide
2. calcium sulfide
3. sodium phosphate
4. chromium(III) sulfate
5. none
of the above
O 6. only 1 and 4

personal, she chose to do it.

i don't see a text, but i am gonna assume this *orbit* the curved path, usually elliptical, described by a planet, satellite, spaceship, etc., around a celestial body, as the sun.

it is the most commonly accepted one