A ground state electron configuration follows the Aufbau Principle that states that electrons should be filled up in orbitals in increasing energy. In the given sequences, the right configuration is
<span>1s2 2s2 2p6 3s2 3p6 4s2 3d8.
2) the possible confirmation that follows Aufbau's principle is
D. </span><span>-[Kr] 5s24d105p3</span>
Answer:
The right objective is A I guess
Answer:
contains water...
Explanation:
the solvent is water, so yes.
The number in Kg of oxygen that are present in the room is
403.1209 kg
<em><u>calculation</u></em>
mass=density x volume
density = 0.001429 g/ cm³
volume =775 cm x 1400 cm x 260 cm =2.821 x10^8 cm³
mass =0.001429 g/cm³ x( 2.8 x 10^8 cm³) =403120.9 grams
convert g to Kg
that is 1 kg = 1000 g
? kg =403120.9 g
by cross multiplication
=[(403120.9 g x 1 kg) /1000 g] =403.1209 kg
Formulas:
1) M = n / V (in liters)
2) n = mass in grams / molar mass
Data:
Molar mass = 40.0 g/mol
mass = 5.20 g
V = 0.500 liter
Solution
n = 5.20 g / 40.00 g / mol = 0.13 mol
M = 0.13 mol / 0.5 liter = 0.260 M
Answer: 0.260 M
