20,345
edits
Changes
→Calculating the number of Neutrons
====Calculating the number of Neutrons====
{| class="wikitable"
| style="height:20px; width:300px; text-align:center;" |Calculate the number of [[neutron]]s in an [[isotope]] of [[Titanium]] with a [[Atomic Nucleus|nucleus]] of '''specific charge''' of ......4.58x10<sup>7</sup>Ckg<sup>-1</sup>.
| style="height:20px; width:300px; text-align:center;" |Calculate the number of [[neutron]]s in an [[isotope]] of [[Neon]] with the '''specific charge''' of ....... for a [[Neon|Neon 2-]] [[ion]].
|-
| style="height:20px; width:300px; text-align:left;" |'''1. State the known quantities in [[SI Unit]]s.'''
<math>S.C. = 4.58\times10^{7}</math>Ckg<sup>-1</sup>
There are 22 [[proton]]s in the [[Atomic Nucleus|nucleus]] of [[Titanium]].
<math>Q = 22\times\1.60\times10^{-19}</math>C
<math>m = (z + n)\times1.67\times10^{-27}</math>kg
Where z is the number of [[proton]]s and n is the number of [[neutron]]s and (z+n) is the [[Relative Atomic Mass|relative atomic mass]].
Therefore
<math>m = (22 + n)\times1.67\times10^{-27}</math>kg
| style="height:20px; width:300px; text-align:left;" |'''1. State the known quantities in [[SI Unit]]s.'''
|-
| style="height:20px; width:300px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers and [[Evaluate (Maths)|evaluate]].'''
<math>S.C. = \frac{Q}{m}</math>
<math>4.58\times10^{7} = \frac{22\times\1.60\times10^{-19}}{(22 + n)\times1.67\times10^{-27}}</math>
| style="height:20px; width:300px; text-align:left;" |'''2. [[Substitute (Maths)|Substitute]] the numbers and [[Evaluate (Maths)|evaluate]].'''
|-
| style="height:20px; width:300px; text-align:left;" |'''3. [[Rearrange (Maths)|Rearrange]] and [[Evaluate (Maths)|evaluate]] the equation and , then [[Solve (Maths)|solve]].''' <math>(22 + n) = \frac{22\times\1.60\times10^{-19}}{1.67\times10^{-27}\times4.58\times10^{7}}</math> <math>n = \frac{22\times\1.60\times10^{-19}}{1.67\times10^{-27}\times4.58\times10^{7}} - 22</math> <math>n = 46.0 - 22</math> <math>n = 24.0</math> There are 24 [[neutron]]s in this isotope of [[Titanium]].
| style="height:20px; width:300px; text-align:left;" |'''3. [[Rearrange (Maths)|Rearrange]] the equation and [[Solve (Maths)|solve]].'''
|}
====Calculating Atomic Number====
{| class="wikitable"