Answer:
Fe3+(aq) + 2S2O32–(aq)→ [Fe(S2O3)2(H2O)2]–(aq)
One mole of Iron(III) nitrate and two mole of sodium thiosulfate are used for a balanced equation
Explanation:
Molecular formula of sodium thiosulfate is S2O32-
Molecular formula of Iron(III) nitrate - Fe2NO3
The chemical equation
Fe3+(aq) + 2S2O32–(aq)→ [Fe(S2O3)2(H2O)2]–(aq)
One mole of Iron(III) nitrate and two mole of sodium thiosulfate are used for a balanced equation
Answer:
Because they need sunlight for, so they need to follow the sun ray that comes from the window
Answer:
The concentration of the sample is 3.564x10⁻³M.
Explanation:
Using Lambert-Beer law, absorbance of a sample is directely proportional to its concentration.
The general graph of the absorbance of the standards with different concentrations is:
Y = 75.9X + 0.0045
R² = 0.9946
<em>Where Y is the absorbance of the sample and X its concentration in mole/L.</em>
If a solution has an absorbance of 0.275:
0.275 = 75.9X + 0.0045
0.2705 = 75.9X
3.564x10⁻³M = X → The concentration of the sample.
1 mole of
![{ C }_{ 6 }{ H }_{ 12 }{ O }_{ 6 }](https://tex.z-dn.net/?f=%7B%20C%20%7D_%7B%206%20%7D%7B%20H%20%7D_%7B%2012%20%7D%7B%20O%20%7D_%7B%206%20%7D)
is 180 grams. (Molar mass).
18 is
![\frac { 1 }{ 10 }](https://tex.z-dn.net/?f=%5Cfrac%20%7B%201%20%7D%7B%2010%20%7D%20)
of 180 , so it means 18 grams of
![{ C }_{ 6 }{ H }_{ 12 }{ O }_{ 6 }](https://tex.z-dn.net/?f=%7B%20C%20%7D_%7B%206%20%7D%7B%20H%20%7D_%7B%2012%20%7D%7B%20O%20%7D_%7B%206%20%7D)
is
![\frac { 1 }{ 10 }](https://tex.z-dn.net/?f=%5Cfrac%20%7B%201%20%7D%7B%2010%20%7D%20)
moles
To find a molecule's molar mass, you should multiply each atom's number with their atomic mass, in the molecule and add them I mean, there are 6 Carbon atoms, 12 Hydrogen atoms and 6 Oxygen atoms. So,
Atomic mass of Carbon is approximately, 12 amu (atomic mass unit), Hydrogen's is approximately, 1 and Oxygen's is approximately, 16. So :