TWO more additional electron can fit into that....
Atmospheric pressure decreases because air is less dense at higher altitudes. Because the atmospheric pressure is lower, the vapour pressure of the liquid needs to be lower to reach boiling point.
New m<span>olecules are formed.
If this helped and you have any other questions, feel free to comment on my wall. Hope this helped.
</span>
Answer:
Mass = 24.4 g
Explanation:
Given data:
Mass of lithium nitride needed = ?
Volume of ammonia = 15.0 L
Solution:
Chemical equation:
Li₃N + 3H₂O → NH₃ + 3LiOH
One mole = 22.414 L
We will compare the volume of lithium nitride and ammonia.
NH₃ : Li₃N
22.414 : 22.414
15.0 : 15.0
Number of moles of lithium nitride:
PV = nRT
n = 1 atm ×15 L / 0.0821 atm.L / mol.K × 273 K
n = 15 /22.41 /mol
n =0.7
Mass of Lithium nitride:
Mass = number of moles × molar mass
Mass = 0.7 mol × 34.83 g/mol
Mass = 24.4 g
The answer is 1,2,3 and 4 ok this answer is correct
