Chemistry, 27.08.2019 12:30 ckenyewildon

In the bohr model of the atom, the ground-state electron in hydrogen has an orbital speed of 2190 km/s. the mass of an electron is 9.11×10−31kg. what is its kinetic energy?

Answers: 1

Show answers

Answers

Answer from: mckinley2006

From the equation:
K.E=1÷2×9.11×10^-31kg×{2190)2
4.555×10^-31kg×4796100
KE=2.184×10^-21g/m/sec2

Answer from: autumnravenaj

The kinetic energy of the electron is 7.58 x 10⁻¹⁹J

From the given question:

The mass of electron = 9.11×10⁻³¹kg Velocity = 2190 km/s = 129 x 10⁴m/s (converted to m/s)

To determine the kinetic energy of the ground, you have to make use of the formula for calculating the kinetic energy, which is:

KE = ½ mv²

Where KE is the Kinetic energy M represent the mass of the body V is the velocity of the body

If you substitute the value, then you have:

0.5 (9.11×10⁻³¹kg) (129 x 10⁴m/s)²

= 7.58 x 10⁻¹⁹J

Thus, the kinetic energy of the electron is 7.58 x 10⁻¹⁹J

Bohr designed a system made up of a dense nucleus and surrounded by electrons held together electrostatic forces of attraction.

Kinetic energy is also known as the energy of motion, which means is the energy an object carries while it’s moving or in motion.

In other words, for an object to have kinetic energy, it must be in motion, such an object must be pulled or push.

This explanation has to do with the Newton's second law of motion. The opposite of kinetic energy is potential energy while its SI unit is Joules (J).

LEARN MORE:

The radius of the orbit is 5.28 × 10−11 m, and the speed of the electron is 2.18 × 106 m/s. The mass of an electron is 9.11 × 10−31 kg In the simple Bohr model of the eighth excited state of the hydrogen atom, the electron travels in a circular orbit around a fixed proton.

KEYWORDS:

ground state electronorbital speedkinetic energylaw of motionpotential energy

Answer from: Quest

in chemistry, a solution’s concentration is how much of a dissolvable substance, known as a solute, is mixed with another substance, called the solvent. the standard formula is c = m/v, where c is the concentration, m is the mass of the solute dissolved, and v is the total volume

Answer from: Quest

Carbon based or cells?

Another question on Chemistry

Chemistry, 21.06.2019 22:30

Asample of neon occupies a volume of 375 ml at stp. what will be the volume of neon if the pressure is reduced to 90.0 kpa? a. 422 ml b. 422 l c. 333 ml d. 333 l

Answers: 2

Answer

Chemistry, 22.06.2019 06:40

Which statement correctly describes metallic bonds? a. they form when certain atoms lose electrons and other atoms gain electrons. b. they involve an attraction between anions and cations. they always involvpoth a metal and a nonmetal. d. they can only form between atoms of the same element. e. they form because electrons can move freely between atoms.

Answers: 3

Answer

Chemistry, 22.06.2019 07:50

What material does not melt at any temperature

Answers: 2

Answer

Chemistry, 22.06.2019 13:00

Tell me the iupac names of the following alcohols:

Answers: 2

Answer

You know the right answer?

In the bohr model of the atom, the ground-state electron in hydrogen has an orbital speed of 2190 km...