Answer:
z+4
Explanation:
An isotope of an element, atomic number Z, has a mass number 2z+4. How many neutrons are there in the nucleus of the element?o
protons + neutrons =mass number
so
z +neutrons = 2z+4
neutrons = 2z+4 - z=z+4 which is the # of neutrons in the nucle
us
Answer:
In physics, a region in which each point is affected by a force. The strength of a field, or the forces in a particular region, can be represented by field lines; the closer the lines, the stronger the forces in that part of the field. See also electromagnetic field.
The answers are the following:
1. <span>1.4 x 10^11 kJ/mol
2. </span><span>9.0 × 10^6 kJ
Therefor I conclude that your answers are correct. </span>
Answer: 1.5×1024 molecules