Nitrogen is used in many plant fertilizers. when it rains, the excess fertilizers run off into streams, rivers, and eventually are carried to the ocean. algae in the water feed off of the nitrogen in the fertilizers. the excess nutrients can cause a huge mat of algae to grow, called an algal bloom. when the nitrogen is all used up, the algae die and decomposing bacteria begin to consume them. the bacteria multiply and consume most of the oxygen in the water, causing many of the fish and other larger organisms in the water to suffocate and die. how could the problem of algal blooms be solved?

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

Which are forms of frozen water? check all that apply. dew frost hail rain sleet

What is the chemical formula of magnesium bromide? a. mgbr2 b. mgbr c. mg2br2 d. mg2br