10 Questions
What is the primary purpose of Mass Spec in measuring the abundance of isotopes in a sample?
To provide a high level of precision and accuracy when measuring the abundance of isotopes in a sample to calculate relative atomic mass of elements.
What is the first stage of the Mass Spec process?
Ionization: Atoms are converted to ions by knocking off electrons to convert to positive ions.
How are ions accelerated in the Mass Spec process?
Ions are accelerated to give them the same kinetic energy.
What happens to ions when they are deflected by the magnetic field in Mass Spec?
The level of deflection is dependent on the mass of the ion; lighter ions are deflected more.
What is the purpose of Atomic Spec?
To measure the concentration of metal ions in a sample.
What is the principle behind Absorption Spec?
The amount of electromagnetic radiation absorbed by an element is dependent on the frequency of the original light and the concentration of elements in a sample.
What happens to the valence electrons in Absorption Spec?
They are excited and move to higher energy levels, but then return to the ground state.
What is the result of ions arriving at the electrical detector in Mass Spec?
The more ions that arrive, the greater the current.
What is the purpose of Mass Spec in calculating the relative atomic mass of elements?
To provide a high level of precision and accuracy when measuring the abundance of isotopes in a sample.
What is the relationship between the frequency of the original light and the concentration of elements in a sample in Atomic Spec?
The amount of electromagnetic radiation absorbed by an element is dependent on the frequency of the original light and the concentration of elements in a sample.
This quiz covers the principles of Avogadro's Hypothesis, gas laws, and calculations involving moles and volume. Test your knowledge of chemistry fundamentals!
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