Answer:
B
Explanation:
In counting the electron domains around the central atom in VSEPR theory, a Core level electron pair is not included.
Core level electron pair are the electrons other than the electrons in the valency shell of an atom. They in the proximity of the nucleus. They do not participate in the bonding.
VSEPR is the abbreviation for Valence shell Electron Pair repulsion theory. VESPR is a model for predicting molecular geometries based on the reduction in the electrostatic repulsion of the valence electrons of a molecule around a central atom.
Molar mass of N = 14 g/molMolar mass of O2 = 32 g/molAdding both masses = 46 g/molActual molar mass/ Empirical molar mass = 138.02 / 46 = 3Now multiplying this co effecient with empirical fomula NO2 = 3(NO2) = N3O6So according to above explanation,D) N3O6, is the correct answer.
Iron gains three electrons
You correctly said that you need the combined gas law.
combine gas law----> P1V1/T1= P2V2/T2
P1= ?
V1= 2.58 L
T1= 368K
P2= 777 torr
V2= 1.53 L
T2= 495K
Now we plug in the values.
(P1 X 2.58)/ 368= (777 X 1.53)/ 495 K
P1= 343 torr
Answer:C - 3.50g
Explanation:
To solve this problem, nitrogen is a gas and it's always two atoms of it in every reaction.
Using the formula
n = m/ Mm
n - number of mole
m - number of mass
Mm - number of molar mass
n = 0.125 mole
The molar mass of N2 = 14.0067 * 2 = 28.0134g/mol
(N - 14.0067 )
n = mass / molar mass
0.125 mol = mass / 28.0134g/mol
Mass = 0.125 * 28.0134
= 3.501675
= 3.50g
