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
An atom a fundamental piece of matter. It is made up of three tiny kinds of particles called subatomic particles such as protons, neutrons, and electron.
Beryllium is a steel-gray metal that is brittle at room temperature.
The kinetic energy of an object is the energy that possesses due to its motion.
A helium atom is an atom of the chemical element helium. Helium is composed of two electrons bound by the electromagnetic force to a nucleus containing two protons along with one or two neutrons depending on the isotope and held together by the strong force.
Let the two helium atom move in opposite direction along the x axis speed and
. Convention of momentum along with the
direction. (
) given
The energy is in the form of the total kinetic energy of the two helium atoms
Because , it follows that
therefore
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Grade: 9
Subject: chemistry
Chapter: atom
Keywords: beryllium, helium, energy, the kinetic energies, speeds
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Answer:
A.) 4.0
Explanation:
The general equilibrium expression looks like this:
In this expression,
-----> K = equilibrium constant
-----> uppercase letters = molarity
-----> lowercase letters = balanced equation coefficients
In this case, the molarity's do not need to be raised to any numbers because the coefficients in the balanced equation are all 1. You can find the constant by plugging the given molarities into the equation and simplifying.
<----- Equilibrium expression
<----- Insert molarities
<----- Multiply
<----- Divide