Answer:
Mass = 7.6 g
Explanation:
Given data:
Volume of F₂ gas = 4.48 L
Standard Temperature = 273 K
Standard Pressure = 1 atm
Mass of gas = ?
Solution:
PV = nRT
P = pressure
V = Volume
n = number of moles
R = general gas constant
T = temperature
n = PV/RT
n = 1 atm×4.48 L / 0.0821 atm. L/ mol.K × 273 K
n = 4.48 atm. L / 22.4 atm. L/mol
n = 0.2 mol
Mass of F₂ gas :
Mass = number of moles × molar mass
Mass = 0.2 mol × 38 g/mol
Mass = 7.6 g
Ignore this its not the anwser 2.7g
Answer:
The number of neutrons are different.
Explanation: -
In 17O
The mass number is 17
The atomic number for oxygen = 8
Number of neutrons of 17O = Mass number of 17O – atomic number
= 17-8
=9
In 16O
The mass number is 16
Number of neutrons of 16O = Mass number of 16O – atomic number
= 16-8
=8
The mass number is 18
The atomic number for oxygen = 8
Number of neutrons of 18O = Mass number of 18O – atomic number
= 18-8
=10
As we can see the number of neutrons are different in each case.
C) The molecules of a gas are much further
apart than those of a solid.
Yes, Bobby is correct
Explanation:
Anomalously high boiling point of water is as a result of the intermolecular forces between the molecules of water.
The intermolecular forces found in water are the very strong hydrogen bonds. The bulk of the physical properties of matter are due to the intermolecular forces that they possess.
- Hydrogen bonds are stronger than van der waals forces and they are more effective in binding molecules together into larger units.
- Substances whose molecules join via hydrogen bonds have higher boiling points i.e lower volatility than those with van der waals forces.
- Hydrogen bond is actually an electrostatic attraction between hydrogen atom of none molecule and the electronegative atom(O or N or F) of a neighboring molecule.
Learn more:
Hydrogen bonds brainly.com/question/10602513
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