When pollution or harmful substances get into an environment what is it called

There is a "short-cut" to determining the number of valence electrons. how can you determine the number of valence electrons by just looking at the periodic table?

What is 1044.987 rounded to three significant figures

Aniline, a weak base, ionizes as follows: c6h5nh2 h2o → c6h5nh 3 oh - what is the ph of a solution that is 0.30 m in aniline (c6h5nh2) and 0.15 m in anilinium hydrochloride (c6h5nh 3 cl-), a soluble salt

What is volcanoes be my friend

Ethane is a member of the hydrocarbon series with the general formula A) CnH2n+2 B) CnH2n C) CnH2n-n D) CnH2n-6

2. If you add water to dilute a solution, what happens to the molarity of the compound in the solution? Explain

Which of the following is NOT true of nitrogen fixation? (A) it is a process that occurs exclusively in some species of prokaryotes (B) it sometimes occurs in bacteria that are mutualistic symbionts in plant roots (C) it is the metabolic process

What two pieces of information do u need to describe force

Why are the atomic masses for most elements not whole numbers?

An aqueous solution is 0.387 m in hcl. what is the molality of the solution if the density is 1.23 g/ml?