General Chem

Question 1

Mass number (A) formula:

Answer 1

A= neutrons +protons

Question 2

Mass of a proton in amu

Answer 2

1.0073amu

Question 3

Mass of a neutron in amu

Answer 3

1.0087

Question 4

Mass of an electron in amu

Answer 4

0.00055

Question 5

Mass- energy equivalence equation

Answer 5

E=mc^2

-E= energy
-m= mass
-C^2= 3.00e8 m/s

Note: the equation can be used to find the amount of energy that results when matter is converted into energy.

Question 6

Units for nuclear binding energies

Answer 6

Electron volts (eV)
1eV=1.602e-19 J

Question 7

Magic numbers

Answer 7

Nuclei that have magic numbers of both protons and neutrons are stable against nuclear decay

2,8,20,28,50,82,126