What element has 2 electrons in its outermost energy level and is in the 2nd period on periodic table?

A glass flask containing 100 milliliters of water is sealed with a rubber stopper and placed on a burner. After a while, gas condenses on the inside surface of the flask near the stopper.

Explain the difference between a neutron and a nucleus

Jane Doe has a cholesterol (C27H46O) count of 178 mg/dL. How many cholesterol molecules does Jane Doe have in each deciliter of blood?

Calcium and bromine have formed a bond. Leading up to this, calcium gave up electrons. It was a (n)

Find the % N in Ca (NO3) 2. Write your final answer to the hundredths.

What is the periodic trend for atomic size from top and bottom in a group? From left to right in a period?

Which planets' orbits is the belt located between the main asteroid belt?

For the baeyer-villiger oxidation of cyclohexyl methyl ketone

What will happen if the density of an object is less than the density of water?

Which cannot be separated into simpler substances? compound element solution mixture