If an atom of the twelfth element (magnesium) has an atomic mass of 25, how many protons (p), neutrons (n), and electrons (e) does it have?

According to the bohr model of the atom, where can atoms exist? where will they ot exist

Of the following bonds, which one is most polar? Select one: а. С-N b. C-C С. С-F d. C-H

What feature is similar among all organisms?

Suppose 13.00 mL of 0.100 M barium hydroxide is required to neutralize 17.00 ml of nitric acid with an unknown concentration. What is the concentration of the nitric acid. Express your answer in mol/L

In which of the following sets are the charges given correctly for all the ions?

Which of the following is an example of the electrostatic force acting in a atom a. a neutron attracting a electron b. a neutron attracting a proton c. an electron attracting another electron d. a proton attracting an electron

When does water move between the surface of earth and the atmosphere

Why does water vapor exist naturally in the atmosphere

How is the volume of a gas related to its concentration of particles? As the volume of a contained gas expands, its pressure concentration of particles will increase.

How does the density of one penny compare with the density of two pennies