Mass Spectrometry Quiz

1.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?
- 5
- 7
- 9
Your answer:

Correct answer:

A penta-quadrupole mass spectrometer contains three quadrupole filters and two rf-only quadrupole collision cells. It allows MS³ experiments. Extrel once offered such a spectrometer.
2.
How long would be a paper needed for printing a profile mass spectrum measured in the m/z 0 1000 range at a resolution of 50,000 at m/z 500 if the peaks were to be 1 mm wide at their half maximum? Let us consider a constant width of all peaks.
- 1 m
- 10 m
- 100 m
Your answer:

Correct answer:

The resolution can be expressed as (m/z)/Δ(m/z), where Δ (m/z) is the peak width at 50 % of its maximum. For a resolution of 50,000 at m/z 500, the value of Δ(m/z) is 0.01. If the Δ(m/z) is to correspond to 1 mm, then the total width of the spectral record equals 1000/0.01 mm, which is 100,000 mm, which is 100 m.
3.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- Neither the trajectory nor the velocity of the particle changes
- The particle either accelerates or decelerates, depending on the field direction and the particle charge sign
Your answer:

Correct answer:

If a positive charge is moving in the same direction as the electric field vector the particle's velocity will increase. If it is moving in the opposite direction it will decelerate. If a negative charge is moving in the same direction as the electric field vector the particle will decelerate. If it is moving in the opposite direction it will accelerate.
4.
What is the electric charge of an ion with m/z = m?
- 1 C
- 1.602 176 634 x 10^-19 C
- 1 eV
Your answer:

Correct answer:

The particle carries one elementary charge, the value of which is 1.602 176 634 × 10⁻¹⁹ C (exactly).
5.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?
- The particle follows a curved path and continues to follow this path until it forms a complete circle
- The particle follows a helical path
- The particle follows a straight line and accelerates
Your answer:

Correct answer:

The magnetic force is perpendicular to the velocity so that it does no work on the charged particle. The particle’s kinetic energy and speed thus remain constant. The direction of motion is affected but not the speed.
6.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?
- Berlin, Germany
- Ostrava, Czechia
- Klosterneuburg, Austria
Your answer:

Correct answer:

Josef Mattauch was born in 1895 in the city of Mährisch Ostrau, in what is now the Czech Republic, then part of the Austrian-Hungarian Empire.
7.
Who made molecular elephants fly?
- John B. Fenn
- Joseph J. Thomson
- W. and O. Wright
Your answer:

Correct answer:

John Fenn was awarded Nobel Prize in Chemistry in 2002 for his work related to electrospray ionization of biological macromolecules. His famous phrase, "we made elephants fly" refers to the ability of electrospray to generate gas-phase ions from big protein molecules.
8.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).
- Hydrazine, oxygen, methanol
- Methanol, hydrazine, oxygen
- Oxygen, methanol, hydrazine
Your answer:

Correct answer:

The monoisotopic masses of these compounds are 31.989829 Da (oxygen), 32.026215 Da (methanol), and 32.037448 Da (hydrazine).
9.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?
- 1868
- 1968
- 1989
Your answer:

Correct answer:

The solution of differential equations of this type came from the French mathematician Émile Léonard Mathieu (1835-1890), who studied the mechanical vibrations of the elliptical drumheads.
10.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?
- Francis William Aston
- Wolfgang Paul
- John Bennett Fenn
Your answer:

Correct answer:

Aston is a 44-kilometer lunar impact crater located along the northwestern limb of the Moon. The crater was named in honor of Francis W. Aston.

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

2.
How long would be a paper needed for printing a profile mass spectrum measured in the m/z 0 1000 range at a resolution of 50,000 at m/z 500 if the peaks were to be 1 mm wide at their half maximum? Let us consider a constant width of all peaks.

3.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

4.
What is the electric charge of an ion with m/z = m?

5.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

6.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

7.
Who made molecular elephants fly?

8.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

9.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

10.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

Czech Museum
of Mass Spectrometry

Our partners

Mass Spectrometry Quiz

Mass Spectrometry Quiz

Thank you for taking our quiz!

1. What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

2. How long would be a paper needed for printing a profile mass spectrum measured in the m/z 0 1000 range at a resolution of 50,000 at m/z 500 if the peaks were to be 1 mm wide at their half maximum? Let us consider a constant width of all peaks.

3. What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

4. What is the electric charge of an ion with m/z = m?

5. What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

6. Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

7. Who made molecular elephants fly?

8. List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

9. The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

10. Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

Czech Museumof Mass Spectrometry

Our partners

1.
What was the largest number of quadrupoles connected in series for tandem mass spectrometry in a commercial instrument?

2.
How long would be a paper needed for printing a profile mass spectrum measured in the m/z 0 1000 range at a resolution of 50,000 at m/z 500 if the peaks were to be 1 mm wide at their half maximum? Let us consider a constant width of all peaks.

3.
What is the trajectory of a charged particle moving parallel to a uniform electric field in a vacuum?

4.
What is the electric charge of an ion with m/z = m?

5.
What is the trajectory of a charged particle moving perpendicularly to a uniform magnetic field in a vacuum?

6.
Josef Mattauch is known for the development of Mattauch-Herzog double-focusing mass spectrometer and his work on isotopes and atomic weights. His career is connected with the Kaiser Wilhelm Institute for Chemistry in Berlin. Do you know where he was born?

7.
Who made molecular elephants fly?

8.
List these compounds according to their increasing mass: hydrazine (H4N2), oxygen (O2), methanol (CH4O).

9.
The quadrupole mass filter has been known since the mid-1950s thanks to the work of Wolfgang Paul. The motion of ions in a quadrupole field can be described by solving second-order differential equations. When were these equations solved mathematically?

10.
Lunar craters are usually named after scientists and explorers. One of the craters on the Moon is named after a prominent scientist in the field of mass spectrometry. Who is named after?

Czech Museum
of Mass Spectrometry