Is CuS an ionic, non polar or polar covalent bond and why

Which of the following actions will lead to a decrease in pressure? decreasing V increasing n decreasing T increasing the number of collisions

Rank the following compounds in order of decreasing acid strength using periodic trends. Rank the acids from strongest to weakest. To rank items as equivalent, overlap them. BH3 HBr H2Se H2S

How to do limiting reagents for chemistry?

What variable is not used in the combined gas law

How many liters or oxygen gas is required to react with 50.0g of aluminum at STP?

Of the following, which is most likely to result after a farmer sprays his crops with pesticides? A. The crops die. B. The insect population increases. C. The soil dries up and blows away. D. A neighbor's well tests positive for pesticides.

How many liters does the following number of atoms of helium take up? 9.42x10^22 atoms He

Why isn't biuret reagent required for determining the absorption spectrum of hemoglobin?

During which phase change does the arrangement of water molecules become more orderly A.) melting B.) subliming C.) boiling D.) condensing

What's the difference between Mixture and Solution?