An atom of beryllium (m = 8.00 u) splits into two atoms of helium (m = 4.00 u) with the release of 92.2 kev of energy. if the or
2 answers:
The kinetic energies and speeds of the two helium atoms are 92.2 keV and
Further explanation
An atom is a fundamental unit of matter. It consists of three small types of particles known as subatomic particles, including protons, neutrons, and electrons.
Beryllium, a steel-gray metal, tends to be brittle at standard room temperature.
The kinetic energy represents the energy an object has due to its motion.
A helium atom is defined as an atom of the chemical element helium. Helium comprises two electrons held together by electromagnetic forces and a nucleus of two protons, along with one or two neutrons based on the isotope, bound together by strong forces.
The two helium atoms are expected to move apart on the x-axis with speeds and
. This adheres to momentum conservation along the
direction. (
) given
The released energy translates into the total kinetic energy of the two helium atoms
Provided that , this leads to
therefore
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Answer details
Grade: 9
Subject: chemistry
Chapter: atom
Keywords: beryllium, helium, energy, the kinetic energies, speeds
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