Answer:
C) Subtract the number of protons from mass number.
Explanation:
An atom consist of electron, protons and neutrons. Protons and neutrons are present with in nucleus while the electrons are present out side the nucleus.
All these three subatomic particles construct an atom. A neutral atom have equal number of proton and electron. In other words we can say that negative and positive charges are equal in magnitude and cancel the each other. For example if neutral atom has 6 protons than it must have 6 electrons. The sum of neutrons and protons is the mass number of an atom while the number of protons are number of electrons is the atomic number of an atom.
For example
The carbon have six protons and six neutrons so its atomic mass is 12 amu and atomic number is six.
Number of neutrons = mass number - number of protons
Number of neutrons =12 - 6
Number of neutrons = 6
2) 1 :30 pm
Hope this helps, good luck! (:
40 miles per hour because if you think about it there is 1120 m/s
30 high temp low pressure...at high temperature, the kinetic energy of the gas molecules increases and they move farther from each other and l<span>ow pressure ensures low inter-molecular interactions among the molecules. </span>
Answer:
15
Explanation:
it would probably be the same number!