Isopropyl alcohol is a liquid with a density of 0.785 g/cm^3. How much volume would be taken up be 50.0 grams of isopropyl alcoh
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<u>Answer:</u>
<u>Bohr's Model postulates-</u>
I postulate - The electrons in an atom orbit around the nucleus in definite circular paths called orbits or shells.
II Postulate - Each shell or orbit represents a specific amount of energy.
III Postulate - By emitting or absorbing energy, an electron may shift from one stationary energy orbit to another.
<u>Three main Limitations -</u>
1- It adjusts to the hydrogen atom's spectrum but not to the spectra of other atoms.
2 - In the definition of the electron as a tiny particle that spins around the atomic nucleus, the wave properties of the electron are not described.
3- Bohr is unable to understand why classical electromagnetism is inapplicable to his model. That is why, when electrons are in a stationary orbit, they do not emit electromagnetic radiation.
Explanation:
<u>About Bohr's postulates-</u>
1 - The electron spins in circling circles around the nucleus, emitting no energy. The orbital angular momentum is constant in these orbits.
Only certain radii of orbits, corresponding to certain given energy levels, are required for electrons in an atom.
2- Not every orbit is possible. However, whenever an electron is in a legal orbit, it is in a state of unique and constant energy and does not emit energy (stationary energy orbit).
<u>For example -</u> The energies allowed for electrons in the hydrogen atom are given by the following equation: The Rydberg constant for the hydrogen atom is in this equation, and n = quantum number will range from 1 to ∞. For each of the values of n, the electron energies of a hydrogen atom produced by the above equation are negative. As n rises, the energy becomes less negative and thus rises.
3- By emitting or absorbing energy, an electron may shift from one stationary energy orbit to another.
The energy difference between the two states would be equal to the energy released or consumed. This energy E is in the form of a photon, and it can be measured using the following formula:
E is the energy (absorbed or emitted) in this equation, and h is the Planck constant (its value is ) and v denotes the frequency of light, which is calculated in 1/ s.
Answer:
Explanation:
A galvanic cell is composed of two electrodes immersed in a suitable electrolyte and connected via a salt bridge. One of the electrodes serves as a cathode where reduction or gain of electrons takes place. The other half cell functions as an anode where oxidation or loss of electrons occurs.
The representation is given by writing the anode on left hand side followed by its ion with its molar concentration. It is followed by a salt bridge. Then the cathodic ion with its molar concentration is written and then the cathode.
As it is given that cadmium acts as anode, it must be on the left hand side and copper must be on right hand side.