# What Is The Kinetic Energy (In J) Of An N2 Molecule Moving At This Speed?

The kinetic energy of an N2 molecule moving at a given speed can be determined by using the equation of KE = 0.5mv2, where m is the mass of the molecule in kilograms and v is the velocity in meters per second. The energy is expressed in Joules (J).

For an N2 molecule, the mass is approximately 4.65 * 10-26 kg. To calculate the kinetic energy, you would need to know the speed of the molecule. This can be determined by looking at the speed of sound in nitrogen which is approximately 1248 m/s. To calculate the kinetic energy of an N2 molecule moving at that speed, you would use the equation:

KE = 0.5mv2 = 0.5 * 4.65 * 10-26 * 12482 = 3.89 * 10-14 J

Therefore, the kinetic energy of an N2 molecule moving at 1248 m/s is 3.89 * 10-14 J.

### What is the average kinetic energy of an N2 molecule?

The average kinetic energy of an N2 molecule is approximately 2.78 kJ/mol.

### What is the kinetic energy of an N2 molecule at a given temperature?

The kinetic energy of an N2 molecule at a given temperature is dependent upon the temperature and the mass of the molecule. The equation used to calculate the kinetic energy of an N2 molecule is:

KE = (3/2) * k * T * M

where:

KE = Kinetic energy of the N2 molecule

k = Boltzmann’s constant (1.38 x 10-23 J/K)

T = Temperature (in Kelvin)

M = Mass of the N2 molecule (in kg)