⁷⁰₂₉Cu
Explanation:
Copper-70 isotope in nuclide form.
A nuclide is designated as: ₙᵇX
Where X is the symbol of the atom
b is the mass number of the atom
n is the atomic number
Mass number is the number of protons and neutrons in an atom. These particles makes up the bulk of the mass of an atom.
Atomic number is the number of protons in an atom. For neutral atom, it is the same as the number of electrons.
To write Copper-70 in nuclide format:
Symbol of Copper is Cu
Mass number is 70
Atomic number from periodic table is 29
⁷⁰₂₉Cu
Learn more:
Atomic number brainly.com/question/5425825
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A pendulum. Hold it high and it has potential energy but no kinetic energy because it is still. As it moves down when you drop it, it changes to kinetic energy and moves faster and faster until it's at the bottom where it has no potential energy. However, it still has momentum, so now it is changed to potential energy as it moves up the other side
Answer: The time is 0.69/k seconds
Explanation:
The following integrated first order rate law
ln[SO₂Cl₂] - ln[SO₂Cl₂]₀ = - k×t
where
[SO₂Cl₂] concentration at time t,
[SO₂Cl₂]₀ initial concentration,
k rate constant
Therefore, the time elapsed after a certain concentration variation is given by:
![t=\frac{ln[SO_{2}Cl_{2}]_{0} - ln[SO_{2}Cl_{2}]}{k}=\frac{ln\frac{[SO_{2}Cl_{2}]_{0}}{[SO_{2}Cl_{2}]} }{k}](https://tex.z-dn.net/?f=t%3D%5Cfrac%7Bln%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%20-%20ln%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%7Bk%7D%3D%5Cfrac%7Bln%5Cfrac%7B%5BSO_%7B2%7DCl_%7B2%7D%5D_%7B0%7D%7D%7B%5BSO_%7B2%7DCl_%7B2%7D%5D%7D%20%7D%7Bk%7D)
We could assume that SO₂Cl₂ behaves as a ideal gas mixture so partial pressure is proportional to concentration:
![[SO_{2}Cl_{2}]= \frac{n_{(SO_{2}Cl_{2})}}{V}}=\frac{p_{(SO_{2}Cl_{2})}}{RT}}](https://tex.z-dn.net/?f=%5BSO_%7B2%7DCl_%7B2%7D%5D%3D%20%5Cfrac%7Bn_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BV%7D%7D%3D%5Cfrac%7Bp_%7B%28SO_%7B2%7DCl_%7B2%7D%29%7D%7D%7BRT%7D%7D)
In conclusion,
t = ln( p(SO₂Cl₂)₀/p(SO₂Cl₂) )/k
for
