Answer:
C₂H₃Cl₃O₂
Explanation:
Given parameters:
Percentage composition:
14.52% C
1.83% H
64.30% Cl
19.35% O
Molar mass = 165.4 g/mo
Unknown:
Empirical formula = ?
Solution:
The empirical formula of a compound is the simplest formula of a compound. To solve this problem, let us follow the process below:
C H Cl O
%composition 14.52 1.83 64.3 19.35
Molar mass 12 1 17 16
number of
moles 14.52/12 1.83/1 64.3/3.5 19.35/16
1.21 1.83 1.81 1.21
Divide by
the smallest 1.21/1.21 1.83/1.21 1.81/1.21 1.21/1.21
1 1.51 1.51 1
multiply
by 2 2 3 3 2
Empirical formula C₂H₃Cl₃O₂
I think it's B) 30 m/s going down.
Answer:
Final Volume = 0.31L
Explanation:
Initial volume V1 = 1L
Initial pressure P1 = 150kPa
Initial temperature, T1 = 25'C + 273 = 298K
Final Pressure P2 = 600kPa
Final Temperature T2 = 100'C + 273 = 373K
Final Volume V2 = ?
The combined gas law is given as;
P1V1 / T1 = V2P2 / T2
150 * 1 / 298 = V2 * 600 / 373
V2 = 55950 / 178800 = 0.31L
Answer:
The correct answer is option C.
Explanation:
Isoelectronic species are those atoms or ions which same number of electrons.But they differ in physical and chemical properties.
Atomic number of nitrogen atom is 7.
![[N]=1s^22s^22p^3](https://tex.z-dn.net/?f=%5BN%5D%3D1s%5E22s%5E22p%5E3)
![[N]^{3-}=1s^22s^22p^6](https://tex.z-dn.net/?f=%5BN%5D%5E%7B3-%7D%3D1s%5E22s%5E22p%5E6)
Number electron in nitride ions = 
Atomic number of oxygen atom is 8.
![[O]=1s^22s^22p^4](https://tex.z-dn.net/?f=%5BO%5D%3D1s%5E22s%5E22p%5E4)
![[O]^{2-}=1s^22s^22p^6](https://tex.z-dn.net/?f=%5BO%5D%5E%7B2-%7D%3D1s%5E22s%5E22p%5E6)
Number electron in oxide ions = 
![[Ne]=1s^22s^22p^6](https://tex.z-dn.net/?f=%5BNe%5D%3D1s%5E22s%5E22p%5E6)
Number of electrons neon = 
Hence, 
are isoelectronic.
