Identify which sets of chemical reactions resulted in a yellow, orange, or red precipitate.
Select 3 correct answer(s)
Al2(SO4)3 + K2 CrO 4

BaCl2 + K2Cro4

BaCl2 + KCI

Na2CrO4 + AgNO3

BaCl2 + MgSO4

BaCl2 + AgNO3

Write the empirical chemical formula of calcium with a mass percent of 38.8, phosphorus with a mass percent of 20.0, and oxygen with a mass percent of 41.3.

Select the correct text in the passage. which sentences describe examples of sustainable living? i live in an old apartment building downtown, but my company is based in an office park on the outskirts of the city. i drive an old car that needs to be replaced. i plan to buy a hybrid for better gas mileage, but for now i am able to carpool with a couple of friends from work. the drive to the office park is about 45 minutes each way, but we do get to work in a modern building. the architects just received a leed certification for the design.

Which element is the least metallic between cadmium, silver, zinc, or iron?