Which of the following is/are part of the nitrogen cycle?

eutrophication

denitrification

saturation

all of the above

Water and mercury are put into three identical bowls

What is the electron configuration for bromine

The si base units for length and time are

Nickel has an atomic mass of 58.69, and cobalt has an atomic mass of 58.93. Despite this, Mendeleev listed cobalt before nickel in his periodic table. What information caused Mendeleev to order the elements in this way?

How many electrons are needed in the outermost energy level of atoms for most atoms to be stable?

What determines the horizontal arrangement of the periodic table?

A 55.3 g sample of lead heated and then quenched in a 175g sample of water. During the quenching reaction the temperature of the water increases from room temperature, 25.0 °C, to 42.6 °C.

What conclusion can you draw from this experiment about the components of the black ink

How does the size of ions affect the conductivity of a solution?

How to write complete ionic and net ionic equations?