Answer:
3.02× 10²⁴ atoms
Explanation:
Given data:
Number of nitrogen atoms = ?
Number of moles of N₂O = 2.51 mol
Solution:
1 mole contain 2 mole of nitrogen atoms.
2.51 × 2 = 5.02 mol
According to Avogadro number,
1 mole = 6.022 × 10²³ atoms
5.02 mol × 6.022 × 10²³ atoms / 1 mol
30.2 × 10²³ atoms
3.02× 10²⁴ atoms
We have to know which of the given statement is not true of carbon.
Not true statement of carbon is - it forms strong ionic bonds.
It can not form ionic bond. to produce ionic bond, carbon has to be converted into either C⁴⁺ or C⁴⁻.
The electronic configuration of C-atom is 1s²2s²2p⁴.
To form C⁴⁺ cation, four electrons must be removed from outermost shell of carbon atom which requires huge energy to supply.
To form C⁴⁻ anion, four electrons must be added to outermost shell of carbon atom which is not possible as outermost shell of C-atom does not have 2d orbital to accommodate extra electrons.
Three. The crust, The mantle. And the core
Answer:
Top-Toluene
Middle-Water
Bottom-Chloroform
Explication:
Chloroform is on the bottom layer because it is the densest liquid.
Toluene is on the top because it is the least dense.
Water is between the two because it’s density is between chloroform and toluene.
