4= lemon juice contains CITRIC ACID and represents a pH of 2.3
The options in the question are:
a) +0.46 V
b) +0.617 V
c) +1.39 V
d) -0.46 V
e) +1.21 V
Answer:
b) +0.617 V
Explanation:
The equation shows that the anode is Sn2+/Sn4+ while the cathode is Fe3+/Fe2+.
The E° cell is obtained from E°cathode - E°Anode
E°cathode= 0.154V
E°Anode= 0.771V
E° cell= E°cathode - E°Anode= 0.771-0.154=0.617
Answer:
2.7x10⁻⁷mol/L
Explanation:
Based on the equilbrium:
PbCO₃(s) ⇄ Pb²⁺(aq) + CO₃²⁻(aq)
The solubility product, Ksp, is defined as:
Ksp = 7.4x10⁻¹⁴ = [Pb²⁺] [CO₃²⁻]
Now, solubility is defined as the amount of PbCO₃ that is dissolved, that is the concentration of the ions. Thus:
Solubility = S = [Pb²⁺] = [CO₃²⁻]
Replacing:
7.4x10⁻¹⁴ = [S] [S]
7.4x10⁻¹⁴ = [S]²
S = 2.7x10⁻⁷mol/L
Idk if this suppose to be detailed or not but here goes...
Nutrients plays a big part in the source of the plants energy, and maintaing it's normal functions for it's life cycle. For the plant Nutrients are ONE of the fuels needed. ( Other than the sun & water )
Each nutrient has a sepcific task they perform. The plants nutrients affects their growth in many ways. Such as the vitiams and minerals they will produce. The aiding needed for plant reproduction, plant metabolism photosynthesis, root growth,plant development etc. These are many ways nutrients affect plant growth.
<h3>Answer:</h3>
SALT
<h3>Explanation:</h3>
Salt is formed by the opposite ions bonded to each other through Ionic Bond. The two ions i.e. Cation and Anions are formed by oxidation and reduction reactions respectively. General dissociation of salt is represented as,
MN → Mⁿ⁺ + Nⁿ⁻
where;
Mⁿ⁺ = Cation
Nⁿ⁻ = Anion
MN = Salt
Following is the list of salts which when when dissociates produces Cations and Anions other than OH⁻ (Hydroxide) and H⁺ (Hydrogen Ion).
Magnesium Sulfate:
MgSO₄ → Mg²⁺ + SO₄²⁻
Sodium Chloride:
NaCl → Na⁺ + Cl⁻
Sodium Carbonate:
Na₂CO₃ → 2 Na⁺ + CO₃²⁻
Ammonium Dichlorate:
(NH₄)₂Cr₂O₇ → 2 NH₄⁺ + Cr₂O₇²⁻
