Answer: Antimony: Antimony is used to create firework glitter effects. Barium: Barium is used to create green colors in fireworks,
Explanation:
Answer:
A. Empirical formula => SiCl₂I₂
B. Molecular formula = SiCl₂I₂
Explanation:
From the question given above, the following data were:
Silicone (Si) = 7.962 %
Chlorine (Cl) = 20.10 %
Iodine (I) = 71.94 %
Molar mass of compound = 352.8 g/mol
Empirical formula =?
Molecular formula =?
A. Determination of the empirical formula of the compound.
Si = 7.962 %
Cl = 20.10 %
I = 71.94 %
Divide by their molar mass
Si = 7.962 / 28 = 0.284
Cl = 20.10 / 35.5 = 0.566
I = 71.94 / 127 = 0.566
Divide by the smallest
Si = 0.284 / 0.284 = 1
Cl = 0.566 / 0.284 = 2
I = 0.566 / 0.284 = 2
Empirical formula => SiCl₂I₂
B. Determination of the molecular formula of the compound.
Empirical formula => SiCl₂I₂
Molar mass of compound = 352.8 g/mol
Molecular formula =?
Molecular formula = [SiCl₂I₂]ₙ
[SiCl₂I₂]ₙ = 352.8
[28 + (2×35.5) + (2×127)]n = 352.8
[28 + 71 + 254]n = 352.8
353n = 352.8
Divide both side by 353
n = 352.8 / 353
n = 1
Molecular formula = [SiCl₂I₂]ₙ
Molecular formula = [SiCl₂I₂]₁
Molecular formula = SiCl₂I₂
Answer:
The first ionization energy is defined as
- Energy which is required to pull out one mole of the outermost shell's electrons in a neutral atom from one mole of gaseous atoms to produce 1 mole of gaseous ions each with a charge of 1+.
- , where A is any neutral atom.
- In the periodic table, Its value decreases from top to bottom in groups and increases from left to right across a particular period.
- Helium has the largest first ionization energy.
- Francium has one of the lowest.
A thermodynamic system interacts with and can exchange heat with its surrounds, or environment, through which it can carry out work. Through a barrier, it transfers heat to its surroundings. The barrier is the physical line dividing the system from its surroundings.
So
pressure = 5 atm.
If the volume and temperature kept constant.
<h2>Which is the thermodynamics law?</h2>
- Energy cannot be generated or destroyed, according to the first law of thermodynamics.
- The universe becomes more entropic when a spontaneous process occurs, according to the second law of thermodynamics.
- Third Law of Thermodynamics: At absolute zero Kelvin, an ideal crystal has no entropy.
- A thermodynamic system interacts with and can exchange heat with its surrounds, or environment, through which it can carry out work. Through a barrier, it transfers heat to its surroundings. The barrier is the physical line dividing the system from its surroundings.
To learn more about : Laws of thermodynamics
Ref : brainly.com/question/14293269
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