Answer:
They are both halogens and have the same number of electrons on their outer shell.
Any element with 7 electrons in the outermost shell will have similar properties. Thus other elements in the same column of the periodic table as chlorine will have similar properties.
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Answer:
36°C
Explanation:
Given parameters:
Mass of aluminum = 725g
Quantity of heat = 2.35 x 10⁴J
Unknown:
Temperature change = ?
Solution:
To solve this problem, we simply use the expression below:
The quantity of energy is given as:
Q = m C Δt
Q is the quantity of energy
m is the mass
C is the specific heat capacity of aluminum = 0.9J/g°C
Δt is the change in temperature
The unknown is Δt;
Δt = = = 36°C
Answer: Option (d) is the correct answer.
Explanation:
It is given that mass of is 137.0 g.
Molar mass of is as follows.
Molar mass of = 2 × 14 + 3 × 16
= 76 g
Thus, number of moles will be calculated as follows.
No. of moles =
=
= 1.803 mol
There are 2 nitrogen (N) atoms present in the formula of dinitrogen trioxide. Also Avogadro's number equals atoms or molecules per mol.
Therefore, number of N molecules or atoms in is as follows.
Number of N atoms =
= atoms
= atoms
Thus, we can conclude that there are atoms of N in in 137.0 grams of .
E = energy in the light rays = h ν = h c /λ = 6.67 * 10×⁻³⁴ * 3 * 10⁸ / (5.84*10⁻⁸) J = 3.42 * 10⁻18 JKinetic energy of electrons = 1/2 m u^2 = 1/2 * 9.1 * 10⁻³¹ * (2.45 * 10⁶)² J = 2.73 * 10⁻¹⁸ J The ionization energy = (3.42 - 2.73) * 10⁻¹⁸ J = 6.9 * 10⁻¹⁹ J
Answer:
Molecule #1 ( sobrerol )
Center a: R
Center b: S
Molecule #2 ( pulegone )
Center a: none
Center b: R
Explanation:
The lowest priority group is curved the clockwise configuration of molecule is referred to as S and anti clockwise configuration is R. The absolute configuration of chiral center is defined by Cahn-ingold-Prelog rules. The sobrerol has center a as R configuration and center b as S configuration. The center a configuration of pulegone is none.