The answer is 0.25 moles because one mole of NH3 would have apporximately 6.02X10^23 molecules
Answer is: ph value is 3.56.
Chemical reaction 1: H₂CO₃(aq) ⇄ HCO₃⁻(aq) + H⁺(aq); Ka₁ = 4,3·10⁻⁷.
Chemical reaction 2: HCO₃⁻(aq) ⇄ CO₃²⁻(aq) + H⁺(aq); Ka₂ = 5,6·10⁻¹¹.
c(H₂CO₃) = 0,18 M.
[HCO₃⁻] = [H⁺<span>] = x.
</span>[H₂CO₃] = 0,18 M - x.
Ka₁ = [HCO₃⁻] · [H⁺] / [H₂CO₃].
4,3·10⁻⁷ = x² / (0,18 M -x).
Solve quadratic equation: x = [H⁺] =0,000293 M.
pH = -log[H⁺] = -log(0,000293 M).
pH = 3,56; second Ka do not contributes pH value a lot.
Answer:
The solvent is deionised water
The solute is AgNO3
The solution is [Ag(aq) + NO3(aq)-]
Explanation:
- This is because it contains no ions which would otherwise react with AgNO3 thus AgNO3 just disolves releasing free Ag+ and NO3- . The resiltant solution can test for Cl presence
- AgNO3 is a soluble salt in water thus disolves in water
- AgNO3 disolves releasing free ions which can be called ionisation
The power plant would be Mitochondrion because it makes ATP for the cell. Hope this helps!
The process of hydrogenation changes the double bonds in unsaturated fatty acids into single bonds, giving the fat a more solid consistency.
<h3>Hydrogenation of fat</h3>
Fat can be defined as one of the main classes of food that is made up of triesters of glycerol and fatty acids or triglycerides.
At room temperature, fats are solids, while those that are liquid at room temperature are called oils.
Fats can be saturated or unsaturated. But an unsaturated fat can be made saturated through the process of hydrogenation.
Hydrogenation of fat can be defined as the addition of hydrogen in the presence of nickel catalyst to form saturated fat.
Learn more about fats here:
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