Explanation:
Using Beer-Lambert's law :
Formula used :
where,
A = absorbance of solution
c = concentration of solution
l = length of the cell
= molar absorptivity of this solution
According to question:
A = (C) : absorbance measured by the spectrometer
c = (B) : concentration, in mol/L, of the stock solution from which the sample was made
l = (A): pathlength of light through the cell
ε = (D) : molar absorptivity, a constant unique to that substance at that wavelength
Answer:
Some of the chemicals used to preserve food and give it color are sodium nitrate, sodium benzoate, and propionate
Explanation:
The answer is ( 2.6 mol HCl )
Answer:
Option E)
Explanation:
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<u>1. Write the solubility equation:</u>
- CaCO₃(s) ⇄ Ca²⁺(aq) + CO₃²⁻
<u>2. Write the concentrations below the equation:</u>
- CaCO₃(s) ⇄ Ca²⁺(aq) + CO₃²⁻
A - s s s
<u>3. Write the Ksp equation:</u>
- Ksp = [Ca²⁺] . [CO₃²⁻] ↔ the solid substances do not appear
<u>4. Solve the equation:</u>
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