Answer:
One independent variable
Explanation:
The other variables are called controlled variables because the experiment is designed to keep them at an unchanging value, known as "controlling" a variable. A valid experiment should have only one independent variable.
1 mole ------------- 6.02 x 10²³ atoms
0.70 moles -------- ( atoms platinum )
atoms platinum = 0.70 x ( 6.02 x 10²³ ) / 1
= 4.2 x 10²³ atoms platinum
hope this helps!
Answer:
Expose the paper to the atmosphere or moisture
Explanation:
An interesting experiment that demonstrates the equilibrium of complexes is that of the invisible ink.
The invisible ink is pink colored [Co(H2O)6]Cl2 which is essentially colorless and pale when it is used to write on paper. This complex is almost colorless when dilute. Therefore, when it is used in writing, the writing can not be seen.
However, if the paper is left to stand or allowed to absorb moisture; the following equilibrium is set up:
[Co(H2O)6]Cl2 ⇄ [CoCl2(H2O)2] + 4H2O
The formation of blue [CoCl2(H2O)2] on standing or exposure to moisture enables the colored writing to be easily read.
Answer:
Hope this helps
Explanation:
These are called quantum numbers: there are 4, but the first three are mainly used, only in orbital notation will you use all four.
The first is the electron's energy level or "shell", used as n. (Principle QN)
The second relates to the shape of the orbital and is used as l, when n and l are put together it defines the sublevel or subshell. (Angular Momentum QN)
The third one relates to the orientation of the electrons in that sublevel used as m(sub)l. (Magnetic QN)
The fourth one relates to the spin states of the electron, since they spin opposite directions, used as m(sub)s. (Electron Spin QN)
Answer:
![[HI]_{eq}=0.942M](https://tex.z-dn.net/?f=%5BHI%5D_%7Beq%7D%3D0.942M)
Explanation:
Hello,
In this case, the initial concentrations of hydrogen and iodine are the same:
![[H_2]_0=[I_2]_0=0.600M](https://tex.z-dn.net/?f=%5BH_2%5D_0%3D%5BI_2%5D_0%3D0.600M)
Thus, considering the given undergoing chemical reaction, one states the law of mass action in terms of the change 
due to the chemical change as shown below:
Therefore, solving for by quadratic equation one obtains:
Nevertheless, the feasible result is the first one as the second one results in negative concentrations, thus, the hydroiodic acid equilibrium concentration turns out:
![[HI]_{eq}=2*0.471M=0.942M](https://tex.z-dn.net/?f=%5BHI%5D_%7Beq%7D%3D2%2A0.471M%3D0.942M)
Best regards.
