Answer:
1.3×10²³ formula unit
Explanation:
Given data:
Mass of CaCl₂ = 23.8 g
Number of formula unit = ?
Solution:
Number of moles = mass/molar mass
Number of moles = 23.8 g/110.98 g/mol
Number of moles = 0.21 mol
1 mole of any substance contain 6.022×10²³ formula unit
0.21 mol × 6.022×10²³ formula unit / 1mol
1.3×10²³ formula unit
The order do electron fill orbitals within the 3p sublevel is that they spread out, waiting until each orbital has one electron before doubling up.
<u><em>Explanation</em></u>
<u> </u> According to hund's rule every orbital in a subshell is singly occupied with one electron before any one orbital is doubly occupied,and all electrons in singly occupied orbital have the same spin.
when every orbital in a subshell is singly occupied by electrons it is then doubled, and the two electrons in same orbital have opposite spins
A.chlorophyll plastid,ribosome,rough endoplasmic reticulum. B.green pigment that absorbs light for photosynthesis, a plant cell structure that stores food of contain pigments, the construction site for protein s ribosomes can be found in the surface of this organelle.
The formula for density = mass/volume
So the units are gcm^3
So multiply by 1000 to get into grams - 1030500
Add units
1030500gcm^3
Answer:atomic number 10 noble gas
Explanation:
