In metallic bonds, the mobile electrons surrounding the positive ions are called a (n) ?

a. Lewis structure.

b. electron sea.

c. electron cloud.

d. dipole

The big bang theory suggests that our universe formed approximately years ago.

Molecular scientists can read the DNA code and compare the DNA of different organisms. This concept is used in molecular clocks to determine which of the following? Morphological relationships Geographic origin Evolutionary relationships

How many atoms are in 0.8288 grams of sodium, Na? 1.670 x 10^25 atoms 1.147 x 10^25 atoms 2.170 x 10^22 atoms 3.159 x 10^22

What functional group contains a nitrogen atom and an oxygen atom

If the manometer reading is 305 mm and the atmospheric pressure is 1.03 atm, what is the pressure of the gas in the flask?

What will happen if the concentration of water inside a cell is higher than the concentration of water outside a cell?

During a lab, you heat 1.04 g of a niso4 hydrate over a bunsen burner. after heating, the final mass of the dehydrated compound is 0.61 g. determine the formula of the hydrate and also give the full name of the hydrate.

Which molecule is a source of energy, a store of energy, and can mix with water?

How many atoms will you find in 2.0 moles of he?

An atom of nitrogen has seven electrons. Which diagram correctly respresents the arrangement of these electrons?