The empirical formula of compounds formed from the given ions are as follows:
- Pb⁴⁺ = PbO₂
- NH₄⁺ = NH₄Cl
- CrO₄²⁻ = Na₂CrO₄
- SO₄²⁻ = K₂SO₄
<h3>What is the empirical formula of a compound?</h3>
The empirical formula of a compound is the simplest formula of the compound showing the simplest ratios in which elements in the compound combine.
The empirical formula of compounds formed from the given ions are as follows:
- Pb⁴⁺ = PbO₂
- NH₄⁺ = NH₄Cl
- CrO₄²⁻ = Na₂CrO₄
- SO₄²⁻ = K₂SO₄
In conclusion, the empirical formula is the simplest formula of a compound.
Learn more about empirical formula at: brainly.com/question/1581269
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Answer is: <span>he boiling point of a 1.5 m aqueous solution of fructose is </span>100.7725°C.
The boiling point
elevation is directly proportional to the molality of the solution
according to the equation: ΔTb = Kb · b.<span>
ΔTb - the boiling point
elevation.
Kb - the ebullioscopic
constant. of water.
b - molality of the solution.
Kb = 0.515</span>°C/m.
b = 1.5 m.
ΔTb = 0.515°C/m · 1.5 m.
ΔTb = 0.7725°C.
Tb(solution) = Tb(water) + ΔTb.
Tb(solution) = 100°C + 0.7725°C = 100.7725°C.
In mitosis, cells are divided to make 2 cells, while in meiosis, cells are divided to make 4 cells.
Answer:
option D is correct
D. This solution is a good buffer.
Explanation:
TRIS (HOCH
)
CNH
if TRIS is react with HCL it will form salt
(HOCH)CNH + HCL ⇆ (HOCH)NHCL
Let the reference volume is 100
Mole of TRIS is = 100 × 0.2 = 20
Mole of HCL is = 100 × 0.1 = 10
In the reaction all of the HCL will Consumed,10 moles of the salt will form
and 10 mole of TRIS will left
hence , Final product will be salt +TRIS(9 base)
H = Pk
+ log (base/ acid)
8.3 + log(10/10)
8.3
Answer:
<h3>The answer is 2.16 moles</h3>
Explanation:
To find the number of moles in a substance given it's number of entities we use the formula
where n is the number of moles
N is the number of entities
L is the Avogadro's constant which is
6.02 × 10²³ entities
From the question we have
We have the final answer as
<h3>2.16 moles</h3>
Hope this helps you
