1 atomic mass unit (amu) represents the mass of an atom or is used to measure mass on an atomic scale. It is also referred to as a dalton, abbreviated as Da, while atomic mass unit is indicated as amu.
1 amu can be translated into grams as follows:
For conversion into grams:
Therefore, the mass of Te is 204.16 * 10^-2^4 g
Explanation:
The following data has been provided:
Energy of radiation absorbed by the electron in the hydrogen atom =
As energy is absorbed in the form of a photon, the frequency is calculated accordingly:
E =
=
=
or, =
It is known that
=
According to the De-Broglie equation
with p =
So,
=
Squaring both sides gives us:
=
=
where m = mass of the electron
Therefore,
=
= J
Since K.E =
=
=
Our conclusion is that the kinetic energy gained by the electron in the hydrogen atom is .
Answer:
B. 26.0 μL.
Explanation:
Hello,
Considering the provided mass and density, the volume calculates to be:
Thus, the solution is B. 26.0 μL.
Best regards.
Answer: The vapor pressure of naphthalene within the flask remains at atm.
Explanation:
The transformation from solid naphthalene to its gaseous form follows the equilibrium reaction:
The formula for calculating the enthalpy change regarding the aforementioned reaction is:
The provided information includes:
Substituting the values into the previous equation produces:
The equation for the enthalpy change for the reaction is:
The given factors include:
By inserting values from the above equation, we arrive at:
where,
= Gibbs free energy = 22.5 kJ/mol = 22500 J/mol (Conversion factor: 1kJ = 1000J)
R = Gas constant =
T = temperature =
= equilibrium constant at 25°C =?
Inserting values into the above equation yields:
where,
= Equilibrium constant at 35°C =?
= Equilibrium constant at 25°C =
= Enthalpy change of the reaction = 72.1 kJ/mol = 72100 J
R = Gas constant =
= Initial temperature =
= Final temperature =
By plugging values into the equation above, we obtain:
The partial pressure of the solid phase is considered to be 1 at equilibrium.
Therefore, the value for will equal
Consequently, the partial pressure of naphthalene at 35°C is atm.